That is not a bad price at all. Those are fairly rare especially in good condition like this one. Best I have ever saw one sell for on ebay was around $300 at Christmas time a couple years ago. Good luck with the sale!
I asked my wife to get me one of those jackets when they were available through Classic Camaro, which she did. 4 years later, my brother and I went to the Indy 500 race and I there was a 97 Brickyard pace camaro for sale at a dealer. I bought it and drove it back to Colorado without my wife knowing. We had rented a car go to to Indy, so both of us had to drive a car back. I honked the horn when I got home and my wife looked at the car and asked "can you rent these cars?". I said no and that it was ours. I then went to the closet and took the jacket out and put it next to the car. She was happy and mad at the same time.
You just have to tell her that you bought it for her (but that she can't drive it). It currently has about 13k miles on it. I put more miles on it driving it back from Indy than I have in the past 10 years...