I paid $7.00 for a quart of Blues Hog at Smoke 'n' Fire
http://www.smokenfire.com/
They have a good selection of rubs and sauces. Not a huge selection but a very good selection of stuff not readily available at grocery stores. They also carry a full line of 12" pre split smoking woods. $25 for a 2 cu ft bag is a bit pricey but is a good way to try woods until you find you favorite or favorites and can seek volume discounts on the ones you like.
IMO buying rubs is a waste of time and money. I have yet to try one I thought was good enough to stand on its own with adding stuff to it. If you gotta add stuff anyway why not make it right to start with, and the price is not even close. I can make a quart of rub for the price of two small bottles.