You are killing me with all these 73-77 A Bodies. Notice this one is a Sport Coupe but no side window louvers. The formal roof was a little known option on the sport Coupe starting in 1974.
I sent an e-mail asking some questions. Rememeber these cars are not that desireable so the price is probably in the ball park for what it is. I'll let you know what the seller says.
It's the same with 73-77 Chevelles. Low interest in those models keep the prices down. It's refreshing to see a nice one now, as a lot of them were crushed years ago.
