I got mine from fk man. No melting of lenses, the Depo's are glass fronted. I have seen them on eBay before but you end up paying more, but I guess that you get the peace of mind that you can complain to eBay/ PayPal.
I think from fk they were about 120 delivered and a couple week wait. Like I said I had to fix the adjusters but other than that they're good quality.