You should be able to get a quote from
https://www.smithandsmith.co.nz/
They have offices in New Zealand and are owned by the same company that owns Safelite auto glass. Safelite said that SmithandSmith should have or be able to get you a windshield for a 2010 Camaro (even if they have to get it from Safelite).
SmithAndSmith's number in New Zealand is 0800483388
Good Luck