Like Bergantino, Mesa tightly manage their RRP in all countries, ie discounts have to be run by them first. I can't see Westside having any say in that. The final price is made up of many components some of which are not under Mesa's control.
As no one here knows any of the details involved in the manufacture, distribution and tax and regulation regimes involved, comparing prices around the world is a wast of time.
If this thing sounds good then you decide if it's worth it or not.