I've been playing this game for a while and I haven't played a game where an extra queen is involve. I think it's safe to say that less than one percent of your game will involve an extra queen. And even if an extra queen is required, you can always invert your rook as previously suggested. So, would you really not purchase a chess set that you like for that less than one percent?
I think this depends a lot on your skill level. At the beginner level, there are many games where extra queens are on the board.
Before I started playing on this site, I used to think pawns could only promote to to one of your previously captured pieces. When I played as a kid, that is how we played.
That's how I thought too. I think we grew up at a time when all chess is OTB, so it naturally follows... Nowadays kids all know better thanks to compater chess.