That price couldn't be beat here in the US, but for future reference for others, you can buy wheel replacement kits likely to fit most luggage with skateboard-type wheels (TravelPro, and from the looks of it, Antler) on Amazon, in the US at least. See, e.g.,
https://smile.amazon.com/gp/product/B01AJQPNYM or search "luggage replacement wheels".
You have to know the wheel size, and check for the size of the axle, but it's an easy fix.