What do you do if you have an idea and can't even afford to patent it?

[shadman]

What is the name of your state?

From Texas:

I have an idea that does one thing but can be made at least a hundred different ways. A single patent costs as much as 6 grand and if you only have to modify it 10% to change it, thats a big problem. How can I sell the idea and protect my interests?

Thanks