The verdict
If you have one or two digital products and want the least admin, I'd pick Gumroad. If you sell courses, coaching or memberships as a serious offer, pick Teachable. The cost model flips as you grow. Gumroad has no monthly charge but keeps a share of every sale. Teachable's plans cost more up front, and the plan without the transaction fee costs more again. Do the sum at a realistic sales volume. Automation is another split. Teachable's public API and webhooks need the Growth plan or higher, and its MCP server is in early access. Gumroad has a public API and no MCP server.