If I wanted to have someone draw me an avatar, is there any way to have me obtain it directly from them, or would I have to shift through the avatar store until I see it once it's done and submitted?

They upload it to their vault and give you the ATC. I can't remember if it is 'by the book' though, honestly.

Any idea how much these services normally cost? I want to pay them for their time and the answers are greatly appreciated Ledah.

Better ask the artist directly

Fair enough, and thank you to everyone for helping :3