need truck radio help.

My 97 silverado factory radio works for a while then shuts down. Works again and shuts down. I need a new one. I would like an aftermarket removable face type. Anywhere here do them or recommend where to get it done?
I want it to be cheaper. Hoping under $100.

Thanks for the help

Crutchfield.com Snipy. You get harness adapters and installation instructions when you buy a deck from them.