I’m guessing you don’t buy and sell many pumps then. The ones that bring the money are nice originals with good patina. Patina doesn’t necessarily mean “rust”. I stopped restoring pumps years ago because the hobby was shifting much more to original pumps (as was I). But to each their own.
You live and breath gas pumps, make parts, sell parts for who knows how many years and between you and you buddy can’t come up with a ballpark number on a Wayne 70 seriously.
I find pumps in that shape are tougher to sell than originals. A nice patina Wayne 70 is worth in the $1500 range. I’d price the one pictured less than that, even though it’s obvious someone put some time and money in to it. JM2C.