The glass is low-iron, but not Starfire. A good quality Starfire glass has minimal green tint, even when viewing the edge.

Is that a 9 foot tall glass door? It looks brilliant. 1/2 inch thick??

how much does a shower door like this cost?

It looks like 12mm. Standard is 10mm. Starfire is really a marketing name and I think even most architects would be hard pressed to tell the difference between it and low-iron for anything 12mm or less.