$1.5 for that HUGE amount of work? I am happy for you that's selling like hot cakes. I had to buy and support your hard work, even if I only needed a small asset (a guitar).
I don't know much about the gamedev stuff, but for a personal project I wanted to use the walls from your tilesets. Is there any wall creator/map creator easy to use, or I will need to import them in Photoshop and Illustrator as I usually do?
Thanks!