It has nothing to do with the amount of the price, the scheme (charge per request, not /user/month) makes third party apps impossible on purpose. Not to say that this abrupt and unannounced dumping of beloved community apps is just the latest misstep of a long string of anti-user moves from Reddit. They had it coming, but their estimation is that a large majority will keep silent. Let's see - Twitter had also not truly crashed yet on their grand way to profitability...