The sign by itself is 12"x12" with two holes for hanging.
Shipping costs are around $4
These are made to hang with a screw or nail or be zip-tied to your hummingbird feeder shepherd hook. All-weather is fine, I suggest partial shade, they are printed very brightly and vibrant and the sun is rough on printed color. Full 12-hour summer Arizona sun will have a few year life spans before you start seeing color loss.
I guarantee they'll arrive in perfect condition.