Free weights / dumbbells anyone?

So, i want to do some working out at home and I was wondering if someone had some free weights (or dumbbells, however you wanna call them) that you want to get rid of for cheap...Not looking for a big set, but a set of 2 or 3 between 10 - 20 lbs would do the trick

Alternatively, maybe some one can point me to a store that will sell them for cheap

thanks!