I didn't really like sake before learning about it on the tour ($15).
To be clear, the tour is just one person talking to you for about 40 mins then having a tasting of four sakes at the end. You don't actually get a walk through of the facilities. The whole place is pretty small. The entire tour takes place in the hallway that leads to the bathroom. But if you're going to do the tasting and have some time to kill, the tour is a good choice. Be prepared to stand unless you get one of the few stools.
Our guide was a Japanese guy born and raised in Canada. He was very animated and entertaining, but he definitely made some comments that could have rubbed some people the wrong way. But overall, very honest, informative, and fun.