I've found that after the purchase, no matter what is bought, is the absolute worst time to ask "did I get a good deal". By then it's a moot point. The money is spent, there's nothing you can do about it, and asking and finding out you got screwed six ways from sunday accomplishes nothing except ruin your otherwise good day, and give everyone else fodder to harass you with.
I'm under no circumstances going to ask anyone if the $3,500 I spent a week ago on a used S&W Sport was a good deal.