Wifi Extenders

I've got one of spectrum's Ubee wifi routers and it works fine. I'd like to get an extender to expand it's range. What extenders (preferably under 75 bucks) are compatible with the router? 

Proven Sharer

Re: Wifi Extenders

Any extender will halve your wireless speed. Get a good second router with large external antennas and use powerline adapters to put the second router elsewhere in your home to provide better coverage. This second router will need to be put into access point mode.