$75 to $100 would be great but I've found two now and neither sell will budge off them for less than $175. I found some used ones but the chain rings are worn out and new chain rings to match are no longer made. I also don't think anyone would sell me the W cut type chain rings off their crankset either.
If I can get a fair price on a complete set, it's less hunting I have to do and I'm pretty much guaranteed not to have any issues setting it all up. There was one set on eBay but the guy emailed me some bigger pics and I could see where the chain had gouged the back side of the big ring pretty bad at one time.