In the old days when surround sound was relatively new and the Internet wasn't full of fake markups, it was possible to get decent bargains....but that's mainly because electronics used to cost so much to begin with. Now the margins are much slimmer and prices have fallen to get decent surround sound systems for not a lot of money.
In 1999, I was on egghead.com, which used to run ebay style auctions of refurbished items. One of the things up for bid was a Kenwood Home Theater in a Box...$500 retail at Circuit City. I was able to snag this system for $169 as a refurb. I hooked that surround sound system up to my Pentium II PC and had a sweet 27" Princeton Graphics display (800X600 resolution)... I was jamming to some awesome Napster tunes in the dorms and watching DVDs and rips from my computer. It was a nice setup. 5.1 Surround sound was nice because the 8" subwoofer had its own 100watt amplifier.
With the large screen, I actually placed it on my dresser in my dorm room and ended up getting a wireless "Surfboard" keyboard that had a joystick-style mouse controller built-in. It allowed me to sit about 6-8 feet away on my bed instead of using the desk.