How to pay

Card payments are taken by our storefront processor at checkout. Trade and library orders can be invoiced in US dollars: tell us the title and the destination and we will send a pro-forma invoice.

Stablecoin settlement

We are reviewing USDT and USDC settlement through a merchant payment API for international buyers. It is not offered on this site yet, and no order can be paid in crypto today. When it is live the invoice will still be issued in US dollars and the amount will be fixed at checkout.

Invoices and receipts

Every order produces a receipt by email. A formal invoice carrying our business details can be issued on request for accounting purposes.