Price range is probably under $50
That is really low for a decent N router. $80-100 would be more realistic. I'd save your money for now.

I've never heard of "Draft 4". Draft 2.0 would have been the latest before ratification.

mainly I'd just be surfing and would like to take advantage of 802.11n
802.11n won't help your "surfing" speed. Even 802.11g is more than what most ISPs provide.