You should read the FAQs before asking a question that's been answered numerous times. Also, this doesn't belong in Serious Discussion.
Jacob wrote...
Bought the digital version and now want the paperback?
If you originally bought the digital edition of one of our books and you'd like to change your order to a paperback do the following. Place an order for the paperback, go through the whole checkout process with your shipping info and all that. Once the order is complete send an email to store@fakku.net with the order ID numbers for your two orders (which will be in the emails we sent), we will then refund your PayPal account the cost of the digital edition!
TL;DR: You buy the physical then return the digital. Hope it helps.