ranger88, did you find a pack yet? This thread amazed me. Packs of all shapes and sizes can be found everywhere in about every price range. The gammut from Kifaru to eBay has been represented.
You didn't state a size for the pack you desired. Different folks have different ideas as to what a BOB is - some folks pack only bare essentials, and others take everything but the kitchen sink. I have a few different BOB configurations for different seasons and/or trips. If you are looking for more specific recommendations, maybe state a rough size or list of items you'd like to carry. Otherwise, you'll continue to get referred to every pack under the sun.
I saw some inexpensive canvas messenger bags at Target the other day, and the Kohl's Department Store had some nice Jansport slingpacks on sale recently, too. I EDC a Maxpedition jumbo versapack that contains my lunch/snacks and basic BOB items. My work is only about 9 miles from home, so I don't worry about things so much. In the winter, I'll carry a larger kit in a Camelbak HAWG (or simialr pack) with more items and foods, and maybe a second simple bag with extra clothing.