Don't forget to purchase a permit if you're buying or trading.
What is this about?
Tiny, I think they're referring to guns.
Schecter, since you have a separate section on guns, you may want to post specific gun laws, to make sure they're followed, and to educate your customers. For instance, permits aren't "purchased", and are only needed with handguns. And purchase permits aren't required if the purchaser has a CPL. However, a PSR form is then required.
Things like that.
Just a suggestion. People are more likely to use your site, I think, if state and federal laws are followed.