I have NO idea how they can charge $50 for this this thing. Yes, it seems like good quality and it DOES work well and helps, but it's plastic and not much to it. I'd say it's worth more like $25-$30 TOPS!! However, there are few products on the market like it, so I guess this is how they can charge so much. The description says this will size most kids up until age 10. I have twin toddlers so figured I'd get my money's worth out of this. I would recommend this product but it's tough to bite the bullet and spend the $50!! Just consider how much you will actually use it over the years...kids feet grow fast!!