I too am in the market for a wireless router. I would steer you away from uber cheap options as I have used them in the past and they have issues such as inconsistent signal, short range, poor firmware and so forth.
I recommend spending at least $80 on a good wireless router. If you only have your desktop/laptop directly wired and have no other wired devices, the 1 port Apple Airport Express would be an excellent choice for you. Works flawlessly, never needs resetting. Fantastic. If you will need longer range, go with the Airport Extreme. They are $100 and $200 respectively. You can get them from the apple website or from Bestbuy or another authorized retailer.