Yeah, now's the time to load up on any free apps or demos or whatever you may want too.
I got skunked by tax, since I didn't bother to do the math beforehand. I was less than 50 cents short from getting two of the $7.99 Guild games. So I just grabbed Attack of the Friday Monsters!, which seemed to be the highest praised one, and instead of getting Crimson Shroud, like I had planned, I randomly bought Pocket Card Jockey. I was looking for something priced at $6.99 so I wouldn't be left with much leftover funds. I figured I like games with weird premises, and I'm up for trying more non-Pokemon Game Freak games.
Several months back, I spent the rest of the funds I added getting all three BoxBoy games on 3DS, Pushmo (to go with Crashmo, which my husband already bought on this 2DS years ago), and Earthbound on Virtual Console.
If I cared more about the 3DS, I probably would've added more funds and got all the Guild games and more of the digital-only 3DS-exclusive games, but honestly, I've mostly ignored the 3DS thus far. I was way more focused on the Vita. But it's nice to grab a few things while I can.