Days gone @ that price is very good.
I got Hardspace Shipbreaker for £2 and it was still too much
I misunderstood what the game entailed and found it incredibly boring, so make sure you pay attention to reviews/gameplay footage.
Until you buy something they don't fix! I have a game called Summer & Winter: Olympic Challenge which runs on DOSBox, a thread on their forums about the issue everyone seems to be having with the game, and it still hasn't been fixed. I contacted support in 2021, and they basically just said can't find the issue our end, so nothing to fix...Still, I think GOG are one of the good guys so spending directly with them is not a problem.