Jack & Jones Products Are 60% More Expensive in Their Stores

I went to Jack jones store to buy a Jack Jones brand coat. I trusted and bought 2 coats. Total amount 10.430-try. 2 hours later, I saw that the same coats were sold at a 60% lower price (7.200-try) in the store named Sporjinal. Jack Jones sells to customers at high prices in her own store. By researching prices in other stores, I realized that I should buy this, how is this even possible? How can others offer these items at cheaper prices??