Those are very nice. The gates you specified are small. Do they need side panels, like the one on the porch in the pictures that you posted?(Top Picture) If so, how wide would they be? That could make a lot of difference.
I’d go down to Metal Amore, or wherever you can find the gate or gate parts, or send them the picture and your dimensions. With a quote for materials you can compare that to your bids. But then again, that legwork may be part of the trouble you want to pay for.