I am wanting to take part in the batik block swap and as with the other swaps you need to send return postage. Would other Canadians who participate in the swaps please let me know how the issue of the return postage is handled. I know that postage costs in the US are very different than in Canada so how do you calculate return postage and then how do you get that money to the person hosting the swap? I know that postal money orders in US funds can be very costly.