Sarah flint perfect block sandal 60mm

Size 37.5 (US7.5) perfect block sandal 60mm height. Brand new in box. Retails for $550. Purchased on sale, but they’re a little small for me. Mostly true to size, maybe a little on the smaller side. They’re genuinely SO comfortable. I tried them on briefly, and noticed the difference in support and cushioning. I’d rather not pay the return fee, so I’m hoping to sell it for the price I bought it for. Will not accept offers for this one. Must go by 7/14.