Yes, you can sell at a flea market even if you have a retail store. Selling at a flea market alongside your retail store allows you to showcase different products or offer special discounts that may not be available in your store. This can attract new customers and increase brand visibility. Moreover, it provides an avenue to test new products or marketing strategies in a low-risk environment.nnHowever, it's essential to consider the logistics of managing your retail store and flea market stall simultaneously. Ensure you have enough staff to handle operations at both locations effectively. Additionally, carefully plan your inventory management to prevent stock shortages at either location.