Vionics have saved my feet but they don't have many boots!
Someone recommended the Kamik Snobuster 2 boots and I have a pair on their way to me. +
Not sure where to find similar but I bet you could use an insert/insole in those to give you arch+
Where do you buy good quality snow jackets and boots for kids online? TIA
Not that would be cheaper. Supporting shoes are pricey