Hi, sorry for the delay in replying.
I don't currently have any other isometric sprite sets for sale but I'm working on producing more right now for release in the near future (starting with medieval buildings and a world map set). I'm not doing commissions right now but what are you looking for? I might consider suggestions for what to work on next.
I have a website but it's mostly to showcase my isometric art rather than a store.
Thanks.