Want to Buy WTB- 52mm filters really cheap! for experimenting

For experimenting with making some pinhole cameras, I'd like to find some cheap 52mm filters. Like $1 apiece. I'll only be using the frame, so will likely break the glass out (unless they are UV's or nearly clear). So maybe you have some with the glass broken or unusable that you can sell me for $1 apiece? I could use 5 or 6 of them.

Yea, I know I can get cheap ones for about $3 each off that big auction site.

Thanks,
Keith Ostertag

Would step-up or step-down rings meet your needs as well?
Postage costs make it impractical for me to help you, but if I can help "widen your net" ....

Thank you Matt, Someone has responded with a very generous offer for a dozen filters for cheap!

Expect them Monday.