They got 8gb for $4.49. I bought one 8gb and one 16gb using $10 BB Reward Zone certificate for a total of $12.63 (including tax). If you sign up the 500 points thing (http://slickdeals.net/f/5904166-Best-Buy-Reward-Zone-500-Bonus-Points-w-10-Purchase
), you got $10 back. So essentially you got 1 8gb, 1 16gb for $2.63 depending on your local tax rate. They have free shipping, if you have silver, you got expedited free shipping. Not bad.
The drive deal expires today, the 500 points deal expire 3/23.