Resurrecting this thread because I've been looking around for this lens for quite a while! I know there's some available on ebay but the prices seem a little unreasonable as compared to what they were sold for at first.
There are things in life, that are just as they are.
In my opinion, the UC-Hex easily is worth the high prices on eBay - honestly.
I have a few 35mm lenses and for some strange reason, the UC-Hex is the one, I prefer over all of the others.
If I need closer focussing (seldom), I take a Summilux ASPH.
If I want a more vintage look, I take a 3.5cm Elmar.
If I want to shoot in darkness, the Voigtlander 35/1.2 is an option.
If one seeks a fast 35mm on a budget, in my opinion one of the nicest lenses, little more can buy is the Canon 35/2 LTM - you can't beat this lens for the money!
The UC-Hex punches far over it's weight and values easily for the high going prices on eBay.
Heck, even the less well made Leica 35 Summilux pre ASPH are more expensive (comparing second hand v4 with brand-new UC-Hex prices)!
Just as an aside: I find the UC-Hex to have A LOT of similarities in imaging to the W-Nikkor 35/1.8 (which in my book is possibly THE most beautifully rendering 35mm in it's combination of characteristics).
I would call a UC-Hex a bargain, that goes for less than the Nikkor, as on top of it's nicer built, it is also a lens, that is a lot better as a regular user!