ZGPax's latest Smartwatch runs MT6572 with a 5Mp camera, the price is about $80 (bulk) to $150 for people enquiring for single samples (you can contact them below). The basic non-Android Smartwatch is about half the price. ZGpax has a round color display Android Smartwatch coming out next week. ZGpax says they will be getting Android Wear UI on some of their Android capable Smartwatches, with and without sim card. Here's my video filmed with ZGpax last year and at their headquarters a few months ago.
You can contact Zgpax here (please only for serious buyers/distributors):
Shenzhen PGD Digital Technology Co Ltd
Anlong International Group (HK) Co Ltd
Andy Loi, Sales Director
Mobile: +86 15013588272
Tel: +86 755 33126046