well i have a steam account made some years ago but i cannot buy anything on steam ...it's difficult to explain.
at first i wanted to buy my rpgmaker mz on steam but i couldn't so i bought it at degica shop instead. what do you think of MV while trying? they probably made it that way to push people into buying more ..i think? buying the maker is already expensive so yeah buying more DLC along is difficult :( there some interesting DLC but i do not think i'll buy any of them. VX Ace /MV /MZ have different things it make the choice difficult between choosing one of them