We make a good skimmer. Your link didn't work but here is my opinion on the three skimmers on eBay. The first one, the 230/2 in new condition is the only one worth considering but it has an older model pump and is not excatly like a new one. The 3130/2 I think is a scam. I have one authorized dealer in New York and the guy has never bought a skimmer and further, just to break even he would have to make almost triple the present bidding, I don't think he is a real dealer. It isn't like most dealers have a hard time selling the product so he has no reason to give it away. As for the third one the supposed 230/3 that is an antique. It is model 230- the original, circa 1985-1990. This has one of the first water cooled pumps we ever made, before then almost all pumps were air cooled.