Galaxy C series is a mid-range smartphone series placed right below Galaxy S series of smartphones. Two models, the Samsung Galaxy C5 and Galaxy C7, were published this June, exclusively for the Chinese market. The Galaxy C7 (32 GB version) sells for 2599 Yuan (around $377), while the 64 GB version can be found for 2799 Yuan (around $405).
Although the Galaxy C7 is at the moment exclusive for Chinese market the phone could launch in the US soon. One page on the B&H Photo Video website shows a 64 GB version of the Galaxy C7 selling for $459. The model is unlocked, supporting AT&T and T-Mobile networks (since the model is a GSM one). No words about 32 GB model being available, since searching the site gives only two results, both showing 64 GB variant.
As far as the specs are concerned, the Galaxy C7 sports a 5.7-inch 1080p AMOLED display along with 4 GB of RAM and 32/64 GB of expandable storage (via SIM 2 slot). Samsung Galaxy C7 is powered by Snapdragon 625, it also has a 16 MP (f/1.9) main camera along with an 8MP (f/1.9) selfie snapper. The battery has a capacity of 3300 mAh, with support for Quick Charge 3.0 technology. The phone runs Android Marshmallow OS.