I was able to get a bunch of free credit (~100,00 credit = $100) from my Halo 4 App Method as well as making trade with those codes to turn around and sell on Listia for more.
Last night I was able to snag a cheap DSi XL for a Christmas gift.
I was able to get this for only 67,827 credits which comes out to about $67.83 once converted (1000=$1). This is a great deal since we have been looking at getting one and even used they are ~$120.
From watching larger auctions it seems that they go for a lot cheaper meaning you get some great deals on items.
If your curious the actual auction can be found HERE
