Thank you for looking around my profile. Currently, in need of money to pay my next month bills, I am lowering my rate by half and here are approximate costs.
500x500 colored sketch, something like a cute character, a bust/ face shot. $5. (raw file is 2000x2000)
500x500 art, something like a cute character, a bust/ face shot. colored. $10. (raw file is 2000x2000)
2560x1440 wallpaper size art, colored, could be anything complex like a whole scene with multiple characters. Starts from $50.
Payment would be through paypal and usually, I make line sketch first then require half payment (except for the first kind, full payment ahead).