Goyard London is officially cheaper than Paris

Hello everyone,
I currently want to buy a St Louis GM (black/black), I heard there is a way that I can order from outside of the UK ( I'm living U.S) in a export price. Can anyone tell me how can I do it? Is the tax will be deducted from the price?
I also will travel to London next month, is the price will be cheaper if I buy directly from London store?:wondering
Thank you!!
 
i just got the st louis pm in goyard london store. after reading back at this thread, i realized theres a huge increase in the price in a year? i got the burgundy(higher price coloured range) PM at 860GBP... retail price.