Is it possible to make money at craft sales or flea markets selling handmade goods?

Okay, so I have a little talent. You may think it’s only VERY little. I can knit. I can whip up adorable mittens in a couple of hours, knit socks, make cute beaded and wire-work jewelry, etc.

Does anyone ever REALLY make any money at craft fairs? My feeling on the matter is that unless you get your supplies for wholesale, you’re unlikely to even recoup the cost of your materials (yarn, sterling wire, etc.).

I’m not looking to get rich. Just pay for my materials and maybe make enough for a few Christmas gifts or to support my continued creative habits. People continue to DO this type of thing, so someone must make SOME money out of it. Is there a secret to this? Certain things or price ranges that sell like hot cakes?

I’m very curious about this!! Any advice would be greatly appreciated.
Let me clarify: I do NOT wish to quit my day job and make a living as an "artist." I work full time and plan to do so until retirement. In fact, I love my REAL job. I’m just wondering if I’d LOSE tons of money getting a booth twice a year or if I might actually make a couple hundred bucks.

The secret to this is PATIENCE!! My husband and I are both very crafty people. He & I both go to crafts fairs and farmers markets. some days are better than others. the first one we went to, we only "made" about $100. That covered the cost of our table, and very little of our aupplies. But we gained experience. We did a lot of research before we started to get ideas on pricing and what kinds of things sell. I still have most of the articles saves on my computer; I can send them to you if you send me your email address. One option that we also did was start a small business website. We sometimes sell more that way than through the craft fairs.