Purchasing from Google Play Without a Device

Hey, like lots of you guys I've ordered a Nexus 4 and am waiting patiently for it. It's my first Android experience, and since there's the Black Friday sales going on with lots of great apps on sale, I was hoping to get my hands on some of them.

Unfortunately, the Play store isn't letting me do that since I don't have any devices, and I was wondering if there was a way to buy the app and just put it on your account even if you don't have a device yet. Thanks !