KFA Marketplace

Build me a small two-sided marketplace for used mechanical keyboards like KFA Marketplace, for a community I already have. Requirements: - Django + SQLite, server-rendered templates with vanilla JS, no frontend framework, one process. - Sellers post listings: board name, condition notes, up to 8 photos, a fixed price, and a shipped weight in pounds. Single quantity, sold means gone. - A /moderate queue: new listings stay hidden until I approve them. - Stripe Checkout for purchase; verify the webhook signature and mark a listing sold only when the payment event lands, not on redirect. - On sale, buy a label through the EasyPost API from the seller's address and the listing weight, then email both sides the tracking link. - A seller ledger: each sale credits the seller's balance minus a fee percentage from .env; a /payouts page shows what I owe whom, paid out by hand and recorded manually. - Stripe and EasyPost keys in .env; Django's built-in auth for buyers and sellers, no telemetry, everything on my own server. - Out of scope: escrow, buyer protection, dispute flows, and inspecting anything. Trust between strangers is my problem, not the app's. - README with setup, stripe listen webhook config for local testing, and the fee math.