The price of shoes are 186.5 for quality 3.88.
The 3.88 is for quality not for the price of item.
Varg is right. Try to set the price to 175 for your shoes.
Elwood is also right to tell you to try to sell leather jackets.
Shoes are not the best choice to sell right now. Shoes need 0.5 kg Leather and 1 kg Textiles and 300 kWh Power. If you sell your leather, textiles and power you get more money than if you sell your shoes.
The other options for producing and selling in your textiles factory and textiles shop are leather gloves and pullovers. You will get better profit if you sell leather jackets, leather gloves, and pullovers compared to sell shoes and jeans.
Good luck
