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I do not recommend WHITIN or, by association, any "Amazon-only" brand. They copy styles from more expensive sneakers at much lower quality to hit cost.
I purchased a pair three years ago as a replacement for Merrell Vapor Gloves that were difficult to find. (Merrell stopped making their Vapor/Trail Gloves for a while, though they appear to be back.) They were heavier than the Merrell's while using cheaper fabric and less comfortable soles.
While affordability of minimalist sneakers is a real issue, I'd recommend spending a little more and getting XERO's.
Meh, the only litmus test is whether something is high enough quality for you at the price you paid. Nothing about Whitins seems particularly low quality to me running 10km/day.
Especially in the shoe market, just because you pay more doesn't mean you're getting higher quality. Brands are just showrooms for shoe factories in Bangladesh.
I'm so tired of being price discriminated for wanting wider shoes, so I'm not about to feel bad for paying $40 for shoes that cater to me. Whitin is the equivalent of going to the Adidas outlet shop and paying $40 for decent shoes.