So the home currency of my store is AUD and I set all my prices in AUD, but I have a plugin that displays the prices in my shop in a selected currency. So the USA customers would see price in USD and they would pay with PayPal(I am pretty sure PayPal charged them in AUD) but the important thing is that they would see USD amounts all the way through checkout. I would get AUD coming into my PayPal.
Now with the new Markets that Shopify has added, if I want this to occur and for PayPal to work I have to set the USA market to AUD, then PayPal works, and my plug in shows them USD prices, but the problem is at the very end when they hit checkout it shows them AUD(it used to never do this before Markets) so they think the price is increasing at checkout and most don’t end up checking out because of this. I know that the price is not actually changing, it is just simply showing them the AUD equivalent at the end during checkout, but many people don’t understand currencies and it just scares them the price is going up.