WTB - 2 CHEAP 58mm UV filters

I'm building a "Hickspodisk" - a very economical and accurate equivalent to an Expodisk - however, I need to get two double-threaded UV filters to do it.

I could go to Evilbay, but I thought I'd try here first.

I don't need any fancy-SMC filters - just not scratched.

Here's a DPP color curve of my 77mm version:

http://www.mindspring.com/~kevinpray/cwb.jpg

Emails please - no PMs.