According to next weeks BB ad (8/26-9/1) Guild wars is listed on sale for 29.99 for that week only (both instore and online). Of course it could always be a price mistake, but having a early hard copy of the ad, it is what it is.
Hope this helps
*edit* BB might of already fixed it from the preleased hard copy ad I got a week ago. I should know soon.
*edit* looks like Im 99% sure it was a mistake and already corrected early on sorry guys

Guild wars (original) for 30 dollars.