I've been confused for years anyways, so if my customers end up confused maybe they will make more sense to me. I have been listing stamp auctions for several years in both currencies, with Canadian stamps offered in Canadian funds, and the rest of the world listed in US funds. I have found that most overseas customers have some idea of what their currency is worth in relation to US $, but when it comes to the Canadian $ they don't have any idea of a conversion rate.