Cheapest eShop price, but has been a bit cheaper via EB Games before.
Game trial going on at the moment, hence the sale.
If you have NSO then definitely check out the trial first.
Played it last night and it starts out slow, but after a couple of hours it picks up and becomes quite fun!
Thanks to Miss B below, if you prefer physical then check if your local JB has stock for $39, or + $2 delivery