可能已经有人贴了，但是还是提醒一下吧，因为你需要自己去注册。

Sign up and earn 2% CashBack Bonus on any purchases made on 3/17/12. Purchases earning 2% CashBack Bonus will not count toward your total annual purchases to determine your tier level. Rewards are added to your CashBack Bonus account at the end of your billing period. See CashBack Bonus Program Terms and Conditions for further details about your reward program.

we need call or online chart to get signed.

如果有人想用这个cashback的话，记住一定要先注册，那个2%好像不是自动的。而且一定要通过discovercard的网站。

通过你的discovercard网站去apple.com order本身就有5%的off,加上只有明天有效的2%就是7%。 但是如果有免税的网站，可能最后的价格是差不多的。

2%是需要你去signed的，我是通过live chart,那个人就给我加上了。