Custom MBPR - Delaware?

So, like everyone else, I want to get my MBPR with 16GB RAM. However, I want to get the no sales tax benefits of Delaware. So is there any way, whether purchasing my MBPR to pick up in Delaware or purchasing it through Delaware's Apple Store (perhaps I can order it through their store via the online store) to avoid that all-so-irritating sales tax?

Or is one doomed to pay sales tax on their customized MBPR?

 

Considering I'm currently a student, this is $220 and a $100 App Store giftcard more than I'd have to pay simply ordering online. Thanks for the advice, though.