Yes i believe deviantart do so, you sell your pieces as "prints" and or on t-shirts and other novalty mercindise. Hope this helps.
PS
If i come by any over sites i will let you know
PSS
Love your work its awsome so you are bound to go somewhere with it
Good luck.
merc-tg
well let me just say your a fantastic artist and i hope someone will recognize your talent
HOTDESIGNS
Thanks, friend.