With this forum having a heavy US following, it is surprising that you won't ship to the states.
I will sell to anyone in any country but I had soooo many people requesting shipping costs to various countries I simply didn't have the time to find all the prices. Everyone wants the cheapest shipping cost possible and this way they can find the best price to their country and they can decide what level of insurance to pay on the shipping. Websites like Parcel2go make arranging collections pretty straight forward... as long as you don't have a dozen different locations to price up.