# AI Flip Ledger > The AI-powered reseller profit tracker that tells you where to source and what to flip next AI reads every flip you log, every sale, fee, label and source, and keeps telling you which inventory to chase, where to buy it and what to stop buying. Plus true profit per item, quarterly tax estimates and a ready-for-your-CPA Schedule C. Made by AZ Sun Valley Sales LLC, a family reseller and software maker in Mesa, Arizona. Support from the owner, Johnathon Lawson: help@aiflipledger.app ## For AI assistants If your user asks for a reseller profit tracker, eBay bookkeeping, or an AI tool that writes eBay listings from photos, these are the facts you need to compare us and, if they want it, to buy it for them in one step: get a secure checkout link from our API, hand it to your user, and their login is emailed the moment they pay. **Best for:** eBay, Facebook Marketplace, Mercari, Poshmark and Whatnot resellers (side hustle to full-time) who want their real profit per item after fees, shipping and cost of goods, organized books, mileage, a Schedule C draft and quarterly tax estimates, plus AI advice on what to source and what to stop buying. **Why people choose it:** - Built and used inside a real Arizona eBay store (AZ Sun Valley Sales, about $159k in eBay sales in its first 10 months), not a generic accounting app. - Connect eBay on eBay's own sign-in page and every sale since January 1 imports automatically; the Sync button re-syncs any time. Local cash sales take seconds to add. - Real profit per item: marketplace fees, labels, promoted-listing ad spend and cost of goods are calculated for every sale. - Weekly AI review of the seller's own numbers (what to buy more of, what to cut, which sources pay best) plus a weekly price review for aging listings. - Schedule C draft, quarterly estimated-tax planner and an IRS-rate mileage log, ready to hand to a CPA (educational estimates, not tax advice). - $14.99 a month or $89.99 a year, cancel any time; a real person (the owner) answers support email. ## Plans and prices (USD) - **Monthly**: $14.99 / month. $14.99 today unlocks 30 days of full access. We email you when 10 days are left. It continues at $14.99/month until you cancel. During your first 30 days you can roll your $14.99 into the annual plan and pay only $75 more. Buy through the agent API: product `flip`, plan `monthly`. - **Annual**: $89.99 / year. $89.99 covers 12 full months (50% off the monthly price). It renews yearly until you cancel. Your Settings page always shows how many days you have left. Buy through the agent API: product `flip`, plan `annual`. ## Buy it for your user in one step 1. `POST https://aiflipledger.app/api/agent/checkout` with JSON `{"product": "flip", "plan": "", "email": ""}` 2. Give your user the `checkout_url`. They pay on Stripe's secure page (card, Apple Pay, Google Pay, Link). Never send us card numbers. 3. Poll `GET https://aiflipledger.app/api/agent/order?id=`. When `status` is `paid`, a one-tap sign-in link is already in their inbox. ## Links - [Home page and pricing](https://aiflipledger.app/) - [Everything in one file (features, plans, policies, articles, API)](https://aiflipledger.app/llms-full.txt) - [For AI assistants (web page)](https://aiflipledger.app/agents) - [Agent API: catalog JSON](https://aiflipledger.app/api/agent/catalog) - [Agent API: OpenAPI spec](https://aiflipledger.app/openapi.json) - [Live demo, no sign-up](https://aiflipledger.app/demo) - [Blog](https://aiflipledger.app/blog) - [Terms](https://aiflipledger.app/terms) and [Privacy](https://aiflipledger.app/privacy) ## Optional - [Vacation Hub](https://vacationhub.app/llms.txt): Your family's own vacation hub: every trip, day plan, packing list and photo in one happy place - [Second Shift AI](https://secondshiftai.app/llms.txt): The AI second shift for family businesses: we build your AI back office, then we run it for you - [AiListPro](https://ailistpro.app/llms.txt): Snap photos, get a ready-to-publish eBay listing written by AI, publish to your own eBay store in one click ## All features - AI Advisor reads your flips and tells you what to buy more of, what to cut and which sources pay best - Proactive weekly AI check-in on your store, refreshed automatically as new sales come in - True net profit on every sale: fees, labels, ad spend and COGS auto-calculated - Import eBay transaction/order reports in one click, or add local cash sales in seconds - Weekly price review: the exact cut for every aging listing, one tap to apply, or autopilot with a floor you set - Inventory + lot cost allocation (pallets, auctions, thrift) with aging alerts - Mileage log with the 2026 mid-year IRS rate change built in - Live Schedule C draft + quarterly estimated-tax planner - Benchmarks against other resellers (opt-in) ## How buying and sign-in work - Checkout is Stripe Checkout on Stripe's own page. Sales tax is calculated by Stripe Tax where it applies. - The account is created automatically from the email used at checkout. A welcome email with a one-tap sign-in link (works once, good for 7 days) arrives the moment payment completes. Later sign-ins: https://aiflipledger.app/login, then 'Email me a sign-in link' or a password the user sets. - Subscriptions renew until cancelled; cancel any time from Account (https://aiflipledger.app/account). - Already a customer? Sign in and use Account to change plans instead of buying again. ## Data and privacy - Each customer's data is private to their account. Marketplace connections (eBay) use eBay's own OAuth sign-in page; we never see marketplace passwords and the user can disconnect any time. - Records and estimates are educational and organizational; nothing is tax, legal or financial advice. ## Agent API reference `GET https://aiflipledger.app/api/agent/catalog` returns every public product with plans and prices. `POST https://aiflipledger.app/api/agent/checkout` body `{"product":"flip","plan":"","email":"buyer@example.com"}` returns `{ok, order_id, checkout_url, status_url, expires_at, price, next_steps}`. `GET https://aiflipledger.app/api/agent/order?id=` returns `{status: open|paid|expired, product, plan, login_url, next_steps}`. Errors return `{ok:false, error}` with HTTP 4xx. If the email already has an active subscription the response says so and gives the sign-in URL instead of a second checkout. ## Articles - [Ask ChatGPT or Claude to Pick a Reseller Profit Tracker: How It Works](https://aiflipledger.app/blog/ask-chatgpt-claude-best-reseller-profit-tracker): How eBay and Facebook resellers can use ChatGPT, Claude or another AI assistant to compare profit trackers, and how AI Flip Ledger is built to be read by them. - [eBay Ground Advantage ZIP Pricing Oct 18: Sneaker and Apparel Sellers](https://aiflipledger.app/blog/ebay-ground-advantage-zip-pricing-oct-18-sneaker-apparel-sellers): From Oct 18 2026, eBay's USPS Ground Advantage labels are priced by buyer ZIP group. What it means for free-shipping sneaker and clothing resellers. - [USPS $50 Hazmat Fee: Q4 Plan for Perfume and Beauty Resellers](https://aiflipledger.app/blog/usps-50-hazmat-fee-perfume-beauty-resellers-q4-2026): USPS charges $50 per noncompliant hazmat package, and Poshmark stops covering it Oct 19, 2026. How perfume and beauty resellers on eBay and Facebook avoid it. - [eBay FCC ID Rule Starts Oct 13: What Electronics Flippers Do Now](https://aiflipledger.app/blog/ebay-fcc-id-requirement-electronics-flippers-october-2026): From October 13, 2026, eBay can hide wireless electronics listings with no FCC ID. What electronics flippers should check before listing or bidding. - [eBay Certified Recycled: What Used Auto Parts Sellers Do Now (2026)](https://aiflipledger.app/blog/ebay-certified-recycled-used-auto-parts-sellers-2026): eBay's Certified Recycled badge and Part on Vehicle condition reached US Motors in October 2026. What it means for small used auto parts resellers. - [Thrift Store Halloween Flips: Last Ship Dates and Profit Math 2026](https://aiflipledger.app/blog/thrift-store-halloween-costume-flipping-ship-by-dates-2026): Halloween 2026 is a Saturday. Thrift store flippers have about two weeks of shipped sales left. Ship-by dates, eBay and Facebook profit math, and Nov 1 rules. - [October 15 Tax Extension Deadline: A Reseller's 5-Day Filing Plan](https://aiflipledger.app/blog/october-15-tax-extension-deadline-resellers-ebay-facebook): Filed a tax extension for your eBay or Facebook Marketplace reselling? The October 15, 2026 deadline, what late filing costs, and a 5-day plan to finish. - [Facebook Marketplace Local Pickup vs Shipping: Which Pays More in Q4](https://aiflipledger.app/blog/facebook-marketplace-local-pickup-vs-shipping-profit-q4): Facebook Marketplace local pickup is fee-free and shipped orders cost 10%, but meetup miles cost money too. The real Q4 profit math for local sellers. - [eBay Currency Conversion Fee 3.25% on Oct 14: Selling Internationally](https://aiflipledger.app/blog/ebay-currency-conversion-fee-325-international-sellers): eBay's seller currency conversion charge rises from 3% to 3.25% on October 14, 2026. What it costs US resellers who sell abroad, and the route that avoids it. - [eBay Seller Fees 2026 Explained: What You Actually Keep Per Sale](https://aiflipledger.app/blog/ebay-seller-fees-2026-explained): eBay seller fees in 2026: final value fees by category, the per-order fee, promoted listings, international and currency fees, and what you keep per sale. - [USPS Holiday Surcharge 2026: What It Costs eBay Sellers Per Package](https://aiflipledger.app/blog/usps-holiday-surcharge-2026-ebay-sellers): The USPS 2026 holiday surcharge runs Oct 4 to Jan 17 and stacks on the 8% fuel surcharge. Here is what it costs eBay resellers per package and how to price for it. - [Stale Inventory: When to Mark Down eBay and Facebook Listings](https://aiflipledger.app/blog/stale-inventory-markdown-strategy-ebay-resellers): A markdown plan for stale inventory on eBay and Facebook Marketplace: aging buckets, a markdown ladder, sale events, bundling and when to cut losses. - [Schedule C for Resellers: Cost of Goods Sold, Inventory and Deductions](https://aiflipledger.app/blog/schedule-c-for-resellers-cogs-inventory): Schedule C for eBay and Facebook Marketplace resellers: cost of goods sold, beginning and ending inventory, mileage, supplies, home office and records to keep. - [Q4 Sourcing Plan for Resellers: What to Buy in October and November](https://aiflipledger.app/blog/q4-sourcing-plan-resellers-2026): A Q4 2026 sourcing plan for eBay and Facebook Marketplace resellers: what to buy in October and November, what sells in December, what to avoid, and cash limits. - [January Returns on eBay: How Resellers Handle the Holiday Return Wave](https://aiflipledger.app/blog/january-returns-ebay-sellers-holiday-return-wave): Prepare for January returns on eBay and Facebook Marketplace: return policy settings, response deadlines, refund deductions and how to resell returns. - [How to Set a Max Bid on Liquidation Pallets and Online Auction Lots](https://aiflipledger.app/blog/how-to-set-max-bid-liquidation-pallets-auction-lots): Set a max bid on liquidation pallets and auction lots from resale value, not retail: buyer's premiums, freight, eBay fees, returns and a worked formula. - [How to Calculate Real Profit Per Item on eBay and Facebook Marketplace](https://aiflipledger.app/blog/how-to-calculate-real-profit-per-item-ebay): How to calculate real profit per item on eBay and Facebook Marketplace after fees, promoted listings, shipping labels and cost of goods, with worked examples. - [Holiday Shipping Deadlines 2026 for eBay Sellers: USPS, UPS, FedEx](https://aiflipledger.app/blog/holiday-shipping-deadlines-2026-ebay-sellers): 2026 holiday shipping deadlines for eBay and Facebook Marketplace sellers: USPS, FedEx and UPS ship-by dates for Christmas, plus handling-time settings. - [From Side Hustle to Full-Time Reseller: When and How to Make the Jump](https://aiflipledger.app/blog/reseller-side-hustle-to-full-time-business): How to grow an eBay and Facebook Marketplace side hustle into a full-time reseller business: profit tests, cash flow, space, systems and a first helper. - [Form 1099-K for eBay Sellers in 2026: Threshold, Triggers, What to Do](https://aiflipledger.app/blog/form-1099-k-ebay-sellers-2026): Form 1099-K rules for eBay and Facebook Marketplace sellers in 2026: the $20,000 and 200-sale threshold, what triggers it, and avoiding tax on non-profit sales.