Acoustics are more skilled hand labor intensive and the wood has to be absolutely superior for a great sounding acoustic guitar. There's just no getting around it.
Are you familiar with Martin's Performing Artist Series? They are some the best sounding acoustics I've ever heard and played. I've been wanting a 12 string acoustic, and I'm trying to convince Martin to make a 12 string for this series since they recently put the J-40 12 Special on the inactive list. They responded very positively to the suggestion, so we'll see what happens. I know it will be an expensive one, but it will certainly be worth it.