For all MGoBloggers in Ann Arbor,
Michgan Book and Supply (located at the intersection of State and North University) has a 75% off Michigan Apparel that is definitely worth a look. This sale covers almost all Michigan merchendise in the store, with the only exception being Sugar Bowl related items. Otherwise it's pretty much everything, including—much to my surprise—jerseys (you can get a #16 jersey with sewn on letters for about $19).
I went there this afternoon off the recommendation of a friend, and it was awesome. So I figured I'd share with the rest of the MGoBloggers, because honestly, can any of us have enough Michigan stuff?
EDIT: Forgot to add, the sale—from what I was told by the cashier—doesn't have a set date when it will end, and will continue until they sell enough of their stock. That being said, from what she said it seems like they still have a lot left to sell, so I'd guess the sale will last for a few more days.