Is there any hidden reasons why I shouldn't buy Sage 50 Cnd at Staples

SUGGESTED

One of my clients is due for upgrade (always have bought on line) but Staples is running a sale on Sage, and the price is over $200.00 cheaper at Staples.  Was wondering if there is a catch, ie, won't update the existing program, or if not, won't restore from back up, so he has all his history.  Or will Sage price match, if we send them the link to Staples.  

Anyone with experience with this?