So I'm in the market for an extended battery for my Inc 2. I search Amazon and see that the only thing they have listed is for the first gen Incredible and they go for about $50-$55. Then I find one that is for the Inc 2 and it is only $19.99. That doesn't seem right to me so I head on over to Ebay and find extended batteries and replacement back covers for only $9.99. Why the huge price difference? Are those el-cheapos from Ebay even going to work? Has anyone tried out after market extendeds in their Inc 2? Thank you.