phred952: 165,000 credits purchased would cost $1650. Trading them for a gift card would make no sense, so probably not.
I guess it depends where you "buy" them. I know someone selling 165,000c for less than $250 seems very unlikely, why not just cash them in yourself.
I had a look and he is verified, which is a bit odd considering he doesn't look likely to win enough credits for this to be an issue. Is some sort of sweepstakes win possible? I would think we'd have heard about it myself. I suppose there are other reasons to get verified, two playing from the same IP or something like that.
First off I'm not saying this is the case here, I really don't know, just a general scenario.
Imagine if you were winning lots of credits and wanted to cash some in but for whatever reason couldn't/didn't want to get verified on that account, what would you do? Maybe get a friend to get the vouchers? You'd obviously need to be pretty near the top of the leader-boards, winning loads at MP or whatever.