Good to know.
I love it but bugs and freezes (online) can be annoying.

According to the leaderboards, just under 30k people have completed the first cup so far; the game's sales are probably in that ballpark.

Is that good for an indie game?? I have no idea

Very good game. Just a hard learning curve. Not used to having to remember to switch between color fields in a racing game. That takes some getting used to, but once you get the hang of it, it's a very good racer.

Well its top of the eshop chart, currently ahead of minecraft, its a steal for £10.99, hope it continues to sell, would of thought it would sell more than Nano Assault Neo, this is their biggest game yet, im really rooting for them lol

EDIT - Just looked on E-Shop now minecraft is number one with FRN in second place.

As I understand it, eshop games tend to have slow starts and long legs compared to retail games. 

Shin'en say they are pleased with sales so far:

http://nintendoeverything.com/shinen-very-pleased-with-fast-racing-neo-sales-thus-far/