Discounts?

We just switched to AT&T (cable, Internet, and home phone bundle) and the sales rep said that I'd be able to get a discounted wireless plan as an AT&T customer. I told him what I have now (Sprint's SERO for $30/month) and he said they'd match that. I really find that hard to believe, though. I was just wondering what kind of discounts other people have gotten and if this sounds feasible. I don't want to go to the store and talk to them yet because our service doesn't start until the end of the month.

Any advice would be great.

Thanks!