Set Default Product Configuration

[UKFabricsOnline]

I'm trying to set up products. We have one attribute which affects the price: "length" and "sample". The sample is a much lower price.

However, Magento always shows the lowest price, which renders all the prices useless. "Length" is set up as the default in the attribute settings, but it isn't default on the front end. 

How can I make this be default on the front end, so it shows the higher price instead of the lower one?

[Dmitry_Fedyuk]

Please publish a screenshot of the problem product's frontend page.

[dorzech7]

I'm having the exact same problem. I have 2 different attributes one is size and the other is color. The price will change based on both factors, but by default Magento 2 displays the lowest price. Is there a way to change this?