I bought water proof shoes after measuring them in shop, 7th size/model variant I tried.

Doing it online, even with free returns, would be far more annoying.

We're not talking about the same thing.

I'm saying I didn't know those shoes existed, especially at that price point.

Are you claiming that you are fully aware of all the products in the world that would be a benefit to you?

Its a discovery problem, not a fulfillment problem.