Reseller HQ
Every haul, every platform's fees, every flip — and your death pile, counted honestly.
Secure checkout via Stripe • One-time purchase — no subscription, yours forever • Also on our Etsy shop • Or get the bundle
The flagship: 10 connected tabs covering inventory with an honest death-pile view, a sales log whose fee engine knows every platform's mid-2026 rates, bundle haul costing, split-year IRS mileage, expenses, monthly P&L, plain-English tax notes, and a dashboard that answers 'am I actually profitable?'
See it in action
What's inside
- Fee engine pre-loaded with mid-2026 rates for TikTok Shop, Facebook (local & shipped), eBay, Poshmark, Mercari, Whatnot, Etsy — every rate editable when platforms change them
- Poshmark's under-$15 rule and Facebook's $0.80 minimum built into the formulas
- Death Pile dashboard — unlisted items age in front of you, with sunk cost totaled
- Bundle haul costing: one receipt allocates across 12 items automatically
- Sourcing mileage with 2026 split-year IRS rates (72.5¢ → 76¢ July 1)
- Sell-through rate, days-to-sell, monthly P&L with tax set-aside
- Plain-English Tax Notes tab: 1099-K gross-vs-profit, federal & state thresholds
- Quick-Start PDF + free email support & free rate updates forever
Questions people ask
- Do I need Excel?
- No — free Google Sheets works identically. Import steps in the Quick-Start guide.
- What happens when platforms change their fees?
- Every rate lives in one editable Settings cell — change it once, every formula follows. We also email free updated copies when major rates change.
- Phone or computer?
- Set up on a computer; logging from the Sheets phone app in a parking lot works great.
- What if I break a formula?
- hello@thriftmath.com — fresh copy free, forever.