To have everything in the iTunes store at 7% off, just follow these instructions. This is a great hack.
You have to switch your country to Mexico in account settings. Everything will change to Spanish, but if you're familiar with the menus, it shouldn't be too difficult.
Angry Birds will be listed as $12, which is 93 cents in USD. $10 apps will cost $9.30. etc.
GPS apps (like TomTom) will be a little more than $5 off. Now wait for the sale.
http://appshopper.com