I almost upgraded one of our phones until I saw at the checkout that they were trying to force me to pay sales tax (PA, 6%) at the full retail price, despite the fact that I would only pay half the retail price during the 30 months of the agreement. Pennsylvania law requires retailers to collect sales tax on the discounted price of an item after applying a discount coupon or discount, rather than the full price of the item.
Not only am I not updating, but I'm also changing providers. The possibility of filing complaints with the BBB and the State Attorney General is also being considered.