The Asus ZenFone 2 (with 2 GB of RAM and 5-inch 720p display) is now available on Amazon
Amazon lets you buy the ZenFone 2 ZE500CL, which comes with a 5-inch 720p display (not 5.5-inch, as the retailer suggests) and 2 GB of RAM. The handset costs $219 (in white), or $229 (in black). It comes unlocked, offering LTE connectivity, Android 5.0 Lollipop with Zen UI, an 8 MP rear camera, dual-core Intel Atom Z2560 processor clocked at 1.6 GHz, and 16 GB of expandable storage space. Stock is limited, so hurry up if you think you need this ZenFone 2 in your life.
At the moment, we don't know when the 5.5-inch 1080p ZenFone 2 with 4 GB of RAM will be launched in the US. In any case, this will obviously be more expensive, costing at least $100 more than the 2 GB models.
source: Amazon (ZenFone 2, black), (ZenFone 2, white)