Flea Markets, not so much as I'm pretty burned out on them, My wife had a spot at Shipshewana, Ind for 20 years till we retired.
Garage/Yard sales, most certainly, Last year got a like new Docker Sheepskin dress jacket for $3.00, I collect medium to hi end watches, you never know??, Case & English pocket & hunting knives ??, double edge razor's??
But then being retired is a plus.