My local Garden center is selling them for $21.99, we bought them yesterday, and think they're great. They don't have stupid silly sayings, just screams and warnings about entering the haunt. We intend to use them right inside the castle doors, one on each side. I'm not a tech guru, but I'm sure the sound chip could be bypassed in favor of your own sounds. I'm not certain they'd work in your cemetery scene, I haven't tested out how close you need to be to trigger them. Our kids 14 and 18 think they're cool also.