The more info we have as background, the more precisely we can point you in the right direction. Specifically, it would be good to know:
Quote:
I am finding that stamps are very complicated to identify
1. What source are you using to try to ID your stamps?
Quote:
They seem to be the most valuable but the prices I am seeing are all over the place
2. Where are you seeing these prices?
3. Do you have a perforation gauge?
And I agree, start with Stallzer's post. Re-read it until it sinks in. The U.S. is a large, literate country needing postcard-rate and letter-rate stamps in huge quantities. They have survived in huge quantities too. Yes, there are some scarcer varieties, but these are truly scarce and should not be expected in modest accumulations.