O'Neal Unisex-Adult Rider Shorty Boot (Black, Size 7)

How durable are these?

I have wide feet, like a duck. I mean wiiiiiiiiiiide. Will these fit?

Why do the size 12 cost more?

I’m looking for a boot that isn’t as tall as a dirt bike boot. I ride a sport quad in sand only and I have full nerfs with nets. Think these would be?