Samsung's beautiful-but-pricey Series 5 Chromebook too rich for your blood? Fear not, cloud-dwellers. Acer just announced that its Chromebook, dubbed the AC700, will go on sale in the states this month for $349.99, to be followed by a 3G-equipped version later this summer. If you're part of the niche market that would happily live in Chrome OS in exchange for instant-on ...