Any Suggestions for custom character Pictures?

[doubletapp3r]

This weekend we are wrapping up (or hoping to successfully wrap up) our current DND campaign of approx 10 years, and we are looking to get a nice picture done up with all the main characters who have played in this campaign for the gaming room.  We looked at avatar art, and they still charge you full price per character even if it's a group photo.  We also looked at a few on sketchmob and there were a couple of artists we looked at but nothing that really jumped out at us.  Does anyone have a suggestion?