It is far from uncommon for cars to be significantly priced lower in the US than the UK/EU. I used to work for a company where we analysed pricing, spec and configuration in the auto industry and going back 15 years ago, the cost of anything other than the Big Three US brands were significantly less in Canada/USA the ROW.
Porsche used to have prices in the US substantially lower but recently, with a lot of noise from customers, raised them.

Mercedes Benz- - An S550 in the US is approx £15,000 less than here in the UK and the US spec has a bit more kit.

VW Golf GTI - Base price is approx £18,000 less in the USA. For a GOLF!

Mazda MX-5 - The lowest priced roadster is priced approx £5,000 less in the US. Base price starts at £28,000 so well less than half of a CX

Lotus Emira First Edition - approx £8,000 less.

It gets even more interesting when you dive into the details of what is included as standard. I used California sales tax of 7.5% on the US prices.

In short, it won't surprise me whatsoever if the CX comes in at a more favourable price than what we pay.