Everything you would need for this construction of grape trellises: https://deepgreenpermaculture.com/2009/09/25/how-to-build-a-grape-vine-trellis/
I bought all of this in the fall with the hope to put them in this spring, but now it looks like I will be moving instead. So if you want a great deal on the materials to build this, the only other thing you would need to buy is the grape vines themselves. The posts alone were quite expensive, as they are 8 feet and had to be special ordered.
Delivery is available but would be extra, depending on where in Duluth you are.