Lohnt sich dein eigenes 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.