I was looking at BB the other day and this was their deal:
Nokia 5160 with AT&T service: $150, includes setup fees (regular AT&T is $99 + $25 activation).
The service is nationwide, no roaming or long distance. The rates were the strange part: the 30 minute card was cheaper than the hour card, and the 15 minute card was even cheaper (on a per-minute basis). I believe the rates were $12 for an hour, $5.50 for a half hour and $2 for 15 minutes. I know it sounds strange, but the salesman used the register and actually scanned each one for the price.
Hope that helps.