I ended up spending $20 and was able to get the whole entire frozen collection of characters, plus the float and all of the buildings and decorations. The only decoration I didn't get was the hot chocolate concession but I literally got everything else after spending $20 (bare in mind that I didn't play during the frozen event so I had none of the characters or buildings or decorations prior to the legendary chests being available last week). I was kinda hesitant about spending money in this game, but I had some iTunes money left over during the batb event and got the chip + be our guest package. I figure if there's something I really want then why not. I'm a big Disney princess fan so events like beauty and the beast, mulan and frozen are more important to me than like the incredibles or something. I will probably never own the incredibles characters or the nightmare before Christmas, because I'd rather spend money on the ones I actually like. I also haven't spent any gems yet on the characters that are in the permanent collection such as captain jack, boo, Pluto, wall-e. Some of them cost a ridiculous amount of gems. The only one I really have my eye on is merryweather the fairy, because again I am a fan of the princess storylines and she's from sleeping beauty. Either her or Maximus from tangled but he is the most expensive one of all... he costs over 500 gems.
I also really want the mad tea cups ride but I'm trying to hold off on spending gems on it in hopes that I will get it in a platinum chest. So far I've been lucky.. I don't get platinum chests often but when I do I typically get something nice. I've gotten the tower of terror, the sea serpent swing, and the fantasia gardens