Bring them in.

Trying to describe them over the phone is nearly futile, but you may want to call ahead for information or an appointment.

Only bring what you want to sell.

If every time the dealer pulls something out of the box, you snatch it back out of their hands, they're going to give up quickly.

Let the dealer look.

Explaining why you have to sell, and how great they are, isn't going to help.

Ask about credit.

Nearly any store would be happy to give more in credit than they would pay out in cash.