They are my main source for PDF DRM free books (I don't care about stamping my name as long as it can be read anywhere). If they stop selling then they lose 10

They are my main source for PDF DRM free books (I don't care about stamping my name as long as it can be read anywhere). If they stop selling then they lose 100% of my business which is about $100 a year. I don't use other formats. They screw technical books too badly. Some other publishers like Apress and MS Press do okay too but if O'Reilly pulls out then it's quite a blow.