Hi! I do illustrations of all sorts, covers included.
Depending on the details, the price is from USD100 and up. Bonus is that since I do trad art (ink/watercolour), I can send the original via mail (+30% of the original price). Contact: syl.telari (at) gmail (dot) com.
Some recent illustrations I've done, including cover illustrations:
More works here: https://www.deviantart.com/stelari/gallery