Does any one know where I can fine prices on fossil?

There isn't really a defined prices for any fossil one fossil i bought a store
cost me $20, but at another it was $100. That's whats great about fossils
there prices are erratic.

Im talking about if you find a fossil how much could you cell it for, and how to?

The answer you are looking for would depend on what it is you are trying to sell and where you found it.

First make sure it is legal in your location to sell the item.

There form Illinois and there mostly Trilobites.

That's always a good idea!