I really think your work is amazing! I browsed through your page and I got really enthousiastic. It almost fits my need perfectly. What concerns me however is the tilesizes of every pack. I downloaded the chests and the breakable pots pack just now to figure it our for myself (as the description on the pages did not include it) and learned that those are 32x32 big. But here you state this tileset is made of 16x16 tiles.
This is for me a big concern and reason for doubt to purchase as I need to be certain that if I buy any Mana Seed pack I can use them with the others without having to deal with size issues. And I honestly expect all of them to fit together perfectly since your work is more expensive than the other assets I find on itch. Don't take me wrong, I still think it is cheap what you ask. If I'd buy all your packs I think I'd have to spend around ~$250,00. Looks like a lot, but once bought I can use it in every copy of my game. And I'd only have to sell 25 copies in order to earn it back, no biggie.
But to stay ontopic, I really urge you to update all descriptions on every page with information about the tilesizes and sprite sizes in pixels. Also, if this tileset is really 16x16 I urge you to update the chest sprites to be 16x16 as well.