"The pricing of each of our brands is reviewed every 6 to 9 months on a rolling monthly basis. During times of exceptional volatility around the $AUD, Mecca may review prices more frequently," the website states.

So what about the additional costs? The website says that "Mecca builds in an amount of 5% of the $AUD retail price to cover costs such as shipping & handling costs, and 10% for the Australian GST. To keep things simple, we round this final amount to the nearest dollar."

We set out to test this promise.