For book covers, I request half the payment when I start the work, and half after I've sent you a re-sized copy of the final cover. Upon receiving the full payment, I'll share the original files with you. But I'm open to other arrangements if I find a client's in need of them.
$50-$100 for cover with typography only
$75-$100 for simple front cover (no typography)
$100-$200 for front covers with typography (example)
$200-$300 for fullwrap (front, back, spine) with no typography