I bought a set of PC Line speakers about five years ago and I still use them today. I paid just shy of £30 for them from Maplin, although I can't remember if they were on offer
My set consisted of one bass woofer that also acts as the main unit, housing the on/off switch, power cable, control lead and ports for other speakers to connect to. The woofer is a five-inch cube and doesn't weigh very much. I'm pleased with their durability, they've been with me through four house moves and there's not a scratch on them.
Included also were two smaller speakers for the left and right audio, these are plugged into the back of the woofer.
The sound quality is good for the price I paid. Using the external controller you can control volume and bass with the little wheels. The bass can't be pumped up too much as it distorts at higher volumes so I certainly wouldn't bring these to any raves, but for watching movies, listening to music at a normal level and using for background music whilst entertaining these speakers can perform really well.
The controller also has a headphone jack but I've never used this.
When switching the speakers on there is a vary audible bass hum however. I don't know what causes this and it can be annoying. When they're not in use I tend to turn them off at the woofer.