Think what that gun would be worth if it was a high grade gun in good condition. It has some interest and could be restored to good condition with a significant outlay of money. But a high grade would have a pathway beaten to the seller door. If a G grade, in that condition is worth a (few) hundreds is that "set" worth much more than two or three times as much?
I assume it is a 10-12-16 or perhaps a 12-16-20 if lucky. Seller will find out what the market will bear soon enough and perhaps it will not show up as some upgraded high gun in about two years. Funny how guns get higher in grade sometimes.