Just came back from Gamestop and noticed their used DSi XL's were dropped down to 129.99. I asked the manager about it and she confirmed it was a price drop.
I want both a DSi XL, my Target didn't have any left, and a PSPgo at a lower price. I might just wait until the 3DS and the NGP price drop/redesign since I already have a PSP 3000 and a DSLite already.