Mount an outdoor antenna and run coax.

As a side benefit you will also receive OTA DTV/HDTV signals if available in your area.

For me, I knew I wanted the TV signal and got the excellent radio signals as a bonus.

$100 will buy all the material you need (antenna, mount, coax, etc.). If you don't want to install it yourself, it's not so good a deal as expect to pay someone an additional $150 to do it for you.