I just saw a set yesterday on the 'bay for under $20. Went back and checked after reading your post here cos I wanted to give you the link but it looks like they sold. They pop up regularly, though...so keep an eye open.
Sorry I was asking because I just bought the three sets that were listed on Ebay. MrMoonlight those are the ones you were probably referring to. I bought them because I didn't know if they were hard to find and seemed like a good deal at a little over $18 a set.