Even when it does become available, the local price is often much higher than the US price. Some of this is due to VAT taxes in many of those countries. I'm not sure how the typical eBay seller/buyer deals with customs and declared values for a used item.
As I understand it VAT's only apply to the producer. The prices are higher because the producer passes along the cost of the tax to customers not because customers are being taxed directly (at least with respect to VAT's). They aren't like a sales tax, you'll never see the actual amount printed at the bottom of a receipt because they aren't accrued at the point of sale.
The point is...used items don't apply to VAT's