Just about 12,000 iPad 2s were auctioned on eBay in the span between the tablet's March 11th US launch and an international launch on March 25th, according to data published by the website. Particularly significant is that about 65 percent of units sold -- almost 8,000 -- went to buyers in the US. The ratio is well above that of 35 percent for the iPad 1 in 2010.