I'd add to this, as someone who runs an eCommerce business: the general public is surprisingly lazy when it comes to optimising the returns on their time/money.

I'd add to this, as someone who runs an eCommerce business: the general public is surprisingly lazy when it comes to optimising the returns on their time/money. We've found things like attractive pictures, high-ranking listings and reduced legwork for customers have a far greater impact on sales than the price or quality of the good itself.