Why does the pricing for invoices differ case by case?

Our payment provider's fees may differ based on various factors such as; the invoice amount, invoice currency, pay-out currency, business' country, pay-out country, and payment method. To benefit from the most favorable rates, we recommend having the invoice and payout currency to be the same in order to avoid FX conversion fees whereas using the most common currencies such as; USD, EUR or GBP also allow for benefiting from more competitive rates.