I tried to look for a decent priced backpack on Amazon a few months ago but there are a gazillion listings for what appears to be the same backpack, only the names differ. I ended up just buying it straight from Aliexpress from where it undoubtedly has been sourced from one of the same (or single?) factories. There's basically cheap-as-chips level products, and then 'high-grade' which is still dubious at times whether the quality of materials is better or not. Middle of the pack product pricing seems to just be swallowed up in a race for the bottom or the top.