I've seen $35 axolotls that were albinos,and only 2 inches long.
Triturus marmoratus for $89.99
Cynops pyrrhogaster (wild-caught) $29.99
But most recently I saw some Necturus spp. for $50/each, I believe.
I think the reason the prices vary so much is because of the short supply of c.b. salamanders in general. I am confident that prices on some of the more expensive newts, like marbled newts will drop dramatically as more and more people start up breeding colonies of them. I remember just two years ago I couldn't find axolotls anywhere, but now I can get them easier than I can get C.orientalis! Wild-caught animals are usually cheaper, and this draws the attention of people who don't do enough research about their care.