Are these the lenses in question?
Seems like a good price, as the cheapest I've found online (admittedly without much research) is $23.10 each.
But I have a question: Does the Star*PAR not come with a set of four lenses? Are you trying to sell the ones you know you'll never use? ( I've only used the fixture once, and was not impressed, as compared to the Source FourPAR.)