Have you actually done some research, because I know I haven't. Are the mods on steam that you pay for tested before they are allowed to demand money for it, or can anyone do it, also what about mods that are game-breaking, would you get a refund for those, or would you simply pay for a broken mod?
Doesn't it say in the Q&A that you can get a refund in 24 hours after the purchase?
That wouldn't really help if you buy multiple mods and they didn't work together, also since you use steam workshop, it means steam installs them for you, I wonder if it would make any problems since certain mods require you to tweak files and such in order to make mods work properly together.