People keep forgetting a few things:
1) TRU is owned by a different company now than it was last year when the sale went on.
2) They removed the PM policy (back in May, I think) due to this change in management, since it was costing them money to do PM's.
3) Even though they encouraged people to buy games during the sale and exchange them for games that come out 30 days from date of purchase, it doesn't mean they'll do it again. Not every TRU did this, so don't assume the same things will happen this year.
4) When you buy 3 games that cost you $100 total, each one is "worth" $33.33, even if they ring out $50 + $50 + free.
5) Let the people that work at TRU, such as the OP, benboxer and Zon27 tell you how the policy works this year. They work there, they know how it works. Also, OTM did work there for 3 years, and he keeps up with their policies as well.