I'm really not a fan of CMC for two reasons, one being that the prices often reported are widely inaccurate, but also because they only allow sorting by a single criteria. I would love to see multi sort options and filtering criteria. Also as a developer i find their API is garbage. The "Coming soon" paid API is hopefully gonna be better but I cant help but think its going to be a ridiculous cost to use when so many others will offer the same for free.