No need to give up your present income. These horrible economic times have bred a new group of successful, independent and wealthy entrepreneur. Bigger than auto makers, chain stores, etc. There's more cash in the flea markets of America than any other business I can think of. I have the facts and figures and I've had them since about 1970.
Nobody can do better profit wise than the flea markets.
Inside information about flea markets and the operators therein. Start various businesses for the flea market operations. What will sell in the flea markets and why. How to buy used merchandise at auctions, garage sales, in the flea marketplace and from other dealers. How to use cheap advertising to your benefit.