Old style Adidas Stan Smith, rare cut from the market

I ordered the sneakers from the well-known site GOAT for shoes. Of course, these sneakers are known to be the most comfortable ones, to the extent that you feel like you're not wearing anything; they're very light and practical, which is why they became so popular. The sneakers cost me 1000 SAR including tax and shipping. The sneakers are brand new, but the size doesn't fit me. The sneaker size is (42.5). I'm forced to sell them at a loss because if I were to exchange them, it would take a long time for shipping and refunding the money.