Asus has quite a few Zenfone 4 models to launch and we expect the base Zenfone 4 to come out this month. We should warn you, though, it's not going to be cheap. Rumor has it that Asus will be charging around $400 for a Zenfone 4 (ZE554KL) with a Snapdragon 630 chipset, 4GB of RAM and 64GB storage. We don't have a full picture of the specs yet, but we know it will have a dual camera and that it will be unveiled on August 17. There should be a model with Snapdragon 660 as well, if you need more power. Then there's the Zenfone 4 Pro, a serious piece of hardware. The expected price is $650,...
Source: http://www.gsmarena.com/asus_zenfone_4_and_zenfone_4_pro_prices_leak_out-news-26646.php