The 7 inch Acer Iconia Tab A100 is getting closer to its launch in the US. Several US retailers have started taking pre-orders for the tablet. Incidentally the tablet still hasn't got an official price tag. While Excaliber PC is taking pre-orders for $329, Negri Electronics has a higher pre-order price tag of $390. While Engadget reports that it will go on sale in the US in early August for