So, when you clicked on Sort by Price the list was sorted correctly in ascending order of price, and the link to select that option was clearly visible, and nowhere did it represent that the list was sorted in any specific order initially?

Then as far as I'm concerned, they are doing nothing different than virtually every other shopping web site on the Internet.

For example, the Dell website defaults its lists to Most Popular. You must select a different sorting method (such as by Price, Lowest to Highest) if you want to see something different.

This is nothing more than a "First World Problem" directly related to the laziness of the consumer in not doing their due diligence.