EXPIRED: Polk Audio RM75 Home Theater System

This set of five speakers is a very economical way to get started upgrading your home theater setup. They'll put you a step above your standard home-theater-in-a-box setup, and you'll be able to pick the subwoofer with the right amount of boom and receiver with the right features for your needs. The set is well=reviewed by customers, and if you're lucky, you can grab it for under $150.