Most Expensive Camera Lenses Where Can I Get Less Expensive Camera Lenses?

Where can I get less expensive camera lenses? - most expensive camera lenses

I have an M42 mount film and asked me where I get cheap (ish you?) Lenses.
I was looking for day from eBay, and do not come with much. I'm pretty broke, and I will not spend more than $ 10 for a lens. I know that sounds ridiculous, but I have some of the cheap, are not fit into my camera and lens adapter expensive.
I check the pawnshops and stores the local savings, but with empty hands. I do not agree interferes with craigslist because it makes my headache.

Am I missing something?