so, figured I'd give this thread an update.
Had two successful refunds meeting the requirements (14 days, under two hours), and just put in a third one (purchased a game I realized I'm not going to play, and I meet the requirements) so the system works within it's bounds. Had one unsuccessful refund attempt for HL2, I bought it, put seven or so hours into it and two days after I bought it it went on sale, so I put the request in and got denied, wasn't a big deal and didn't think it would work but thought it was worth a try.