I bought my first thing from Metalabel. I just discovered Nadia Asparouhova has a new book out, her "Working in Public: The Making and Maintenance of Open Source Software" (from Stripe Press) was excellent, and I was pleased to find her latest, "Antimemetics: Why Some Ideas Resist Spreading", has been released on Metalabel. My only critique is the end of the checkout UX leaves you without a single link with which to navigate back out.
