Carina has not just magically dropped their prices by $60, I'm afraid. Select "shoe tree" when adding a model to cart--you will see the price go back up to where it was yesterday.
In other words, there is no real change. They simply allow you to not take a shoe tree and thereby get a cheaper price.
Do you know this for sure or are you going based on intuition?
I'm pretty sure they lowered back to $450 for shoes, $530 for ankle boots (Chelsea, chukka, etc,) and $575 for jumper-style boots, which was the supposed set standard. You'll find the same price at Skoak (pretty sure they're matching the shoe trees deal).
Nonetheless, I sent an email to Carmina and will let you know what they say. Let's see how "magical" their pricing really is.