My performance at BigStock since returning to independence has been pitiful - someone commented here that it was largely older files they were selling, which would obviously be a problem for a newbie. However, I just looked at the payout reports to date and 7.15% of the total has been from non-US sources. It makes no difference to me in terms of money as I'm a US resident, but I thought it was interesting it was so low.
One might conclude that my portfolio doesn't appeal to non-US buyers, but if I look at SS for the period of June 2011 - July 2012, my percentages are 42.1% US sales, 57.9% non-US