Remember you have 32g not 16g, that is worth $100 more in Apple's world. Don't feel like you got a bad deal. Keep your enthusiasm and don't look back. I've had my 32g mini since day one and was in love with it, until this week when a work friend told me she got a 64g mini for $350 from a friend who works at Apple. Suddenly I felt ripped off that I'd paid $429 and it actually decreased my enjoyment of my mini. Then I realized that I don't have a friend at Apple and was never offered that deal and I got over it.
Enjoy your new ipad!