Cancel an order

I just ordered a new 15" macbook pro on apple.com this morning with the student discount. That also got me $200 off of a new ipod. But I didn't expect there to be tax, which I found out there was when i got the confirmation email. I could just drive to the Apple store in Newark, DE for tax free shopping. But to do that id have to cancel my current order. The macbook pro i can cancel online but the ipod wont let me. It says either its too late or you just cant do it online and have to call. I did pick engraving, but theres no way they would have engraved it by now on a sunday. Do you think its possible to cancel it at this point?

The only thing you can do is call Apple and ask.