Do not build bidding dashboards first. For the first projects, collect authors, narrators, printers, and print requests, then match them manually. The marketplace software should encode what already works by hand.
Marketplace
Audio and print, without the old gates
The first marketplace is manual: match authors to narrators, and short-run print buyers to printers with idle capacity. Software comes after liquidity.
Audio
ACX-style, wider reach
For authors and voice actors outside the usual audiobook royalty rails.
Royalty floor
5% for 5 years
Narrators get a non-negotiable minimum participation in net profit.
Print
Dead press time
Small batches matched to printers who can monetize idle capacity.
Rights
No lock-in
Authors keep rights. Suppliers get paid. The press coordinates the deal.
MVP rule
Where Webdock fits
GitHub Pages can host the public marketplace pages for free. Webdock becomes useful for private files, quotes, account login, payment webhooks, royalty ledgers, print-order status, and eventually automated matching.