i would suggest that you put in an order in their online store. a 2-3 week wait isn't as long as it sounds. (i had to wait a month to get mine and it wasn't that bad a wait.). why stress out and waste time & effort going around to stores, when you can sit back, relax, and get one shipped to you?!
with the common issue of backlight bleeding on many units, buying from apple directly gives you an extra measure of protection (a refund) if you get a bad display and exchanging it doesn't fix the issue.
if you still want to try to source one locally, you can always cancel your online order afterwards.