Monk's Ki Ability - Ki Strike

This may have been discussed already, but I wanted to revisit it, if that is the case, so it's fresh in my brain.

Audra Frost is level 4, and as such has a decent Ki Pool (yay, Ki Mystic!). The Monk class description of the Ki Strike doesn't mention that using it (so that a Monk's attacks are considered magical for purpose of defeating DR) requires a Ki Point to be expended. Other uses of Ki Power do specify, however I wanted to seek clarification before the situation arises for her to make attacks again to see if it is as stated:

As long as the Monk has 1 ki point in their Ki Pool they can make Ki Strikes with their Unarmed Attacks (reads as if it doesn't require a Ki Point to be spent to use the ability)

Basically, as long as a monk has 1 Ki point left, their attacks automatically Ki Strike. So at level 4, all IUSs made by a monk with at least 1 Ki point count as magic weapons for overcoming damage resistance. So yes, no expenditure of Ki is required.

At least, that's how I read it.

That's my read as well.