I agree with Wicked.
If customers see you at a flea market, it is assumed that you have the same junk everyone else has,,, just a different color.
For the last two summers, I've set up a booth at the local farmers market. In this town of 30,000 it's the 'social event' of the week. For the first couple of months I had no lookers but they had to get used to seeing me there consistantly. That let them know that I wasn't just somebody who happened to be in town, never to be seen again.
I took a couple of years but I sold some shiney stuff from the display and passed out a LOT of business cards. Now People know that I'm in business and orders are coming in.
My business started with "Signs, Designs, Parts and Art" on my card. I just let the market lead my business. This Spring it looks like the short-run "parts" is going to be the right path. It is paramount to be the guy that 'somebody knows'. But they have to know you're out there.When the City Council wanted a keyring momento for a convention, somebody remembered me. I cut and powder coated 350 little cowboy boots for the attendees. When the Capitol Christmas Tree came through town a couple of years ago, the council wanted a special ornament to present to the US Forest service, somebody on the committee remembered me. I got that job and cut fifty extras. They were sold as numbered special edition pieces.
You will become known by the company you keep. A flea market is not the place to become known to the people you want be your customers. Never respond to anyone who asks if you will take less for your creations or everyone will assume that your reduction is the new standard price.