I paid 12 buck I think 2 years ago so you should be able to find it cheeper then 25-35 bucks. But this looks like the identical model I puchase some where else.

The brass colored one...
http://www.bouchillonperformance.com/BPEheaterValve.asp

Another guy doing the same thing..
http://www.worldwidegarage.com/coppermine/displayimage.php?album=toprated&cat=0&pos=8



Heres one for 3.95 but it looks a little small.
http://store.auctionfrontier.com/Items/h1287%20evr?sck=14393189