10th is the last one, though a release date still hasnt been announced for an english translation so we might be waiting a while. Ive been following the series for like 3 years now so I feel you, I dont know what I'll do when it's over :'D
Maybe they'll do botw next or something, idk. Its a...
Crash 2: N-Tranced for the GBA, was only $8 on eBay. It's supposed to be really good, I think we had it when I was much younger so I'm excited to play it again now that I'm actually sort of good at Crash lol.