I dont really do $US but I found this after a quick Googleage
http://www.amazon.co.uk/Linksys-Cisc.../dp/B00318BN72
which is £45 (roughly $70) but may vary with taxes etc.
I tend to stick to Cisco/Linksys or D-Link kit nowadays.
---------- Post added at 14:40 ---------- Previous post was at 14:40 ----------
Remember your PCs/Laptops would ALSO need WiFi N capability (most recent laptops should be capable, Desktop PCs...not so much probably)