Being able to set the currency conversions, and also have the option to have it automatically pulled in for the currency to be based on a daily basis.
This meaning that the orders would come in as the correct currency, but also when the retail price would be set, it would automatically populate the marketplace prices, buy using the multiplier that has been set.
Retail price £5
Currency conversion for USD : 1.2
Price for Amazon US : 1.2*5 = $6