Where can I buy Cheap speaker for PS3?

I am looking for good but cheap speaker for PS3
The ones I can find in bestbuy and futureshop is pretty expensive and they don’t even look that good
I am thinking about spending around $100…I live in Windsor Canada…so I don’t have much resources offline…
I don’t have anything particular in mind but something decent would be perfect for me
please provide me with link or place with price…
THANKS

ps) is any of this speaker good???
Creative Inspire 5300
logitech x540
logitech z640
Hercules XPS 2.1 50
Thanks