Printful

Printful is a print-on-demand and fulfilment company that prints, packs, and ships custom products under your brand, so sellers never hold inventory. It was founded in 2013 by Lauris Liberts and Davis Siksnans, began in Latvia, and is now headquartered in Charlotte, North Carolina with fulfilment centres across North America, Europe, and Asia.

There is no subscription required to use Printful — you pay per product as orders come in, and it integrates directly with Shopify, Etsy, WooCommerce, and Amazon. An optional Printful Growth membership at roughly $25 per month unlocks discounts on products and shipping.

The affiliate program pays a flat 10% commission for 12 months from each referred customer, calculated on their order value. Taxes and shipping are excluded from the calculation, but discounts are included. There is also a $25 bonus the first time one of your referrals subscribes to Printful Growth.

Because sellers order repeatedly rather than once, that 10% compounds across a year of a store's fulfilment spend rather than paying out on a single transaction. The cookie window is 30 days, payouts are monthly via PayPal, and the minimum threshold is a low $25.