Are these available in the "smoke crystal" frame with the green lenses?

These are available in “SHINY BLACK OCEARCH FRAME” and “SMOKE CRYSTAL OCEARCH FRAME”

The sellers verify this is a new item but what do the glasses come with overall?

A hard case and a cleaning cloth

Do you have the frame option matte atlantic blue with grey/silver mirror glass lense? i do not want the standard grey lense and i do not want poly.

At the moment they only make the Rincon Atlantic blue frame with Gray Silver Mirror 580P and Gray 580G. The lens you want is only available in the Matte Smoke Crystal color frame Rincon style. Link below. https://www.amazon.com/Costa-Unisex-Rincon-Crystal-Silver/dp/B076Q4N8B2/ref=sr_1_1?m=A1RQ3RH9W749GJ&s=merchant-items&ie=UTF8&qid=1527612826&sr=1-1&keywords=B076Q4N8B2

Why are these cheaper than on the costa website or in retail? are they real?

Most times, manufacturers websites keep products at full MSRP to ensure the value of the product. Usually the deals are found through private retailers that buy the product in bulk and sell at a discounted rate. These prices are pretty similar across the internet for the same sunglasses and options.