Is NEO GAS (not NEO) a good buy right now, as it hovers around the $20-25 mark?
I'm not sure. But if you are interested in the NEO project, you should probably just buy NEO instead of gas. Gas will always be seen as a lesser part of the NEO economy than the actual NEO tokens, even though it is still a big part of the system.
Plus if i understand correctly(i'm not a big NEO fan so i could be mistaken), you get gas tokens if you hold NEO, sort of like interest.