I've turned on Purchasing Power Parity for my ebooks and classes, including Rebuilding Rails (rebuilding-rails.com). I have also removed my usa-is-expensive honour-system equivalent coupon. Basically: Gumroad supports PPP now, so I'll do that instead of a DIY coupon.

In some countries (e.g. USA, UK) you're losing a discount. In some countries (e.g. India) you're getting a much better discount.