Just one more thing to pay for.

Just one more thing to break. 

Clip-on tuners, stompbox tuners, rack tuners, amp top tuners, cell phone tuners, iPad tuners, etc. are plentiful and cheap/free.  And there is another well crafted tuner that is free.  It's called "ears".  Half of the built-in tuners I've seen on acoustic guitars either don't work well, or don't work at all, and I still wind up putting them through my Peterson. 

Bill, tgo