The sub-woofer on mine collects flies. The wiring feels messy whatever I do and the small speakers have needed re-gluing twice. That said, great sound and a bargain at this price.
My ones are still sounding good, just that the sticks come apart really easily. Nothing a bit of clear tape can't fix though.
Listening to mine now. Great system. Bought them for the same price last time there was an ebay code on.
Got these from Harman Kardon for just £60 with £40 off code back in December 2015. This is therefore not the best deal from them that they've done. Edit: let me add that they sound fantastic though, so if this is the cheapest you can find or you really want them then go for it.