Besides being a collector I've been playing hobbyist dealer for years. Usually selling at 1 to 3 yard sales a year. I've done OK with it and grown my inventory. Now I'm seriously considering moving up and trying my hand at the local flea markets with it. This is still just a hobby and not intended to be an income or anything like that. I'm wondering if anyone here has gone that route? Any advice or things I should know going into it?
I know I've seen a lot of ridiculously overpriced coins as flea markets. I'm sure there's a booth rental fee you have to take into consideration. Also, I think it would be wise to have it within eye sight of workers. I haven't sold at a flea market, but as a customer I like cases orderly and not stuffed full. The best I ever saw looked like an old jewelry case with several shelves. It turned and coins were set up on little plastic stands. Plus, it locked.
While not intended to be an "income", please be aware that you are responsible for taxes on any profits you make. The simple fact that you've grown your inventory implies that you've already profited, and incurred a tax liability. Keeping good records of all purchases and sales, and proactively declaring profits each year should keep you out of trouble.
Just be fair. The worst advertisement in the world are people talking poorly about your price or your product. Be fair and be honest and customers will flock to your door.