Maybe 200k for one, but honestly I don't think you'll have much luck selling those here. Maybe try working on your lineart a little? That would help them look much cleaner.
Thanks :) I know that that's something that I need to work on :)
[flower=Epona]
I second this. As-is, I'd say maximum 250K. Once you've improved lineart & worked on shading, you can probably start asking for higher.