You did great while seriously rough cosemeticaly this is a great bike worth fixing up and keeping. The first generation Dura ACE stuff is worth a couple of times what you paid for the bike or more. Even in it's rough shape I could see the right buyer paying $150-200 as is fixed up all nice an pretty ready to ride $300-400 for this bike wouldn't be out of reason. Just clean it up and get everything working if it's your size you may just decide you want to keep it.