Jafin,
The exp cap is 161,000 for Tales of the Sword Coast. If you can't find it at your local Best Buy or other local stores, you can try ordering it at
www.ebgames.com
I bought Baldurs Gate2: sword of amn and throne of bhaal through ebgames.com. I received both a day or two after ordering them.
Glaivas Gastondale
Deadshot Ranger