DEMO MODE: these simulate the OAuth consent flow.
Production wires real Google / Facebook sign-in via Supabase Auth.
This is where the real provider consent screen appears.
You can switch anytime from the header.
Same demo dataset as the seller scanner — try 70985301114 (Saga #1), or a full 17-digit code with issue supplement: 75960604808530011 (ASM #300). Catalog auto-sorts chronologically — year · title · issue.
Production hands off to Stripe's hosted page — card details never touch this site. Demo skips to confirmation.
Mods can remove chat messages and mute users. Muting silences chat only — it never stops bidding or buying. Blocking shuts a user out entirely: no chat, no bids, no purchases from you; if they're leading the current lot, their bid is voided and the lot resets to the opening price. Only you can appoint or remove mods, and only you can block a mod.
Any grade shown as “EST. GRADE” or “est. grade” is an automated approximation generated from limited data. It is NOT a professional grade. Kipa Comics is not affiliated with, endorsed by, or certified by CGC, CBCS, PGX, or any grading service. A book’s actual grade can only be determined by submitting it to a professional grading service. Condition defects (color-breaking ticks, restoration, pressing candidacy, interior flaws) may not be reflected in any estimate.
Estimated values and recent-sale comps are informational only. They are not an appraisal, an offer to buy, or a guarantee of resale value. Comic markets fluctuate — sometimes sharply. Nothing here is financial or investment advice. Do your own diligence before buying, selling, or bidding.
Kipa provides tools and data; buyers and sellers are responsible for their own listings, prices, bids, and purchase decisions. Condition of raw (ungraded) books is as represented by the seller.
This is a SIMULATION build: data sources, estimators, payments, and other bidders are simulated stand-ins for the production systems.
Catalog your whole collection with the same scanner and data sellers use. DEMO: no real charge.
Wins are charged automatically the moment the hammer falls — that’s how live auctions stay honest. Pick what’s on file. DEMO: nothing real is stored or charged.
Plus Stripe’s standard processing (2.9% + 30¢) on card sales, itemized on every receipt. Sellers over $5,000/month unlock a −1% platform-fee discount. Buyer loyalty credits are funded by the platform, never deducted from your payout. Integer-cent math throughout.
Powered by Stripe Connect in production: buyers pay into the marketplace account; your shipping rule triggers the transfer. New sellers carry an extra 3-day hold after scan while history builds.
Demo dataset stands in for Metron / GCD. Full codes with the 5-digit issue supplement are recognized (e.g. 75960604808530011 → issue #300). Try: 75960604808 (ASM #300) · 75960607724 (UF #4) · 76194123056 (BA #12) · 70985301114 (Saga #1) · 75960601234 (Hulk #181). Production: barcode → Metron API / GCD (CC-BY-SA) via a server proxy; grade estimate → trained condition model.
Your current plan’s platform fee + Stripe processing apply at sale — see “Your plan & fees” above. No listing fees, ever.