I thought it was about time to post up some rates for artwork, since I've been asked a few times for these. The costs below should be used as a guide, since most projects will be different, depending on budgets and scale of work, and costs are negotiable. The prices are subject to change.
Prices per 1 character (digital copies) -
Pencil Sketches: £20 or $35
B&W Lineart: £25 or $40
Coloured Lineart: £35 or $56starfox999.deviantart.com/art/…starfox999.deviantart.com/art/…
Fully Painted: £75 or $120fav.me/d2fusm0starfox999.deviantart.com/art/…
Add an extra 50% per extra character.
Hope that all helps!