If you just don't want to wait to see what Google has in store for the next Nexus phone, then there's a good deal over on eBay right now for the Nexus 5. For just $315, you can grab a 16GB N5. No shipping, and no sales tax as long as you're outside of New Jersey. Not a bad deal, really.
Looks like there's a "limited quantity" available, so you should jump on it now if you plan on buying.