I almost replied to your other post about 20x30 metal prints for $1000.
I have been doing art shows for several years, selling metal prints for more than 3 years.
They amount to about 40% of my sales, the rest being canvas and matted prints.
$1000 for a 20x30 Dye Sub metal is way over the top, unless you are very famous. There aren't too many around that can demand that price and get it.
Especially at art shows, gallery prices can approach those levels, but thats a different animal. Typically they are priced around $300+ give or take.
IMO you will be taking them home with you after the show if that is what you price them at.
So print what will fit your walls.
Bill