I needed some new boots recently and picked a pair I liked and browsed the rest of the shop and saw the very same boots in the kids section for half the price (they went up to a 5)so I put my adult ones back and bought the kids one, along with another pair in brown.
Im a dummy and don't understand the sizing on the site, if they go up to your size I'd just get them, they are nice boots, hope you manage to find something similar if you can't get those.