Hey there, these are great. Had to make my own 48/48 versions (not hard just set Photoshop to nearest neighbour and multiply the DPI by 3) that said, Would be helpful if you named the RPG Maker MZ stuff with the tile letter you expect people to use rather than putting it further in the file name so it gets cut off. (Not that I can't change it, but the easier you make things for your customers, the happier they'll be.)
Was also surprised that there's no auto tiles for transitioning from sand to grass. Again, I can make it myself but part of the reason somebody buys a tileset is to be able to focus on other stuff.
Anyway, overall they're great. I'm very happy with my purchase. :)