While Tomodachi Life is a good game on its own, $35 is too much to ask considering on how shallow is the game. I mean, if you try to play longer than 15 minutes, you would be likely getting bored of its repetitiveness nature of taking care of your Miis. Unlike Animal Crossing: New Leaf, there's always something to do on every five minutes of gameplay, but most of them are essentially the same tasks you've encountered minutes ago. That's what you'll eventually encounter in the full game regardless on how many Miis on the island. Also, the dialogues I've seen so far are too simplistic to efficiently represent said Mii's personality. I wish they were on par with ACNL's writing.
Part of the game's appeal is how your Mii representation of yourself (or people you actually know) reacts among various situations and the game's WarioWare-style humour getting you to smile. For example, Wario actually ending up marrying some random Japanese girl made me laugh. That's the only major redeeming factor of the game
As a owner of the Japanese version of the game, I'm having a hard time recommending this game. If you can find it for cheap enough, then go ahead. Otherwise, keep your hard-earned bucks for something much better than Tomodachi Life.