Logitech Z Cinema Advanced Surround Sound System for $79.99. Shipping ranges from $25 to $40, depending on the location. It has many advanced features and comes with a remote to control a variety of functions. Here is a detailed review for your reference. Most places have it for well over $200, such as here and here. As a comparison, Walmart has it for $257.
Originally posted earlier, this is just a friendly reminder.