Has Anyone Tried Alternatives to Acceledent?

I am very interested in acceledent, I just got my invisalign aligners 6 weeks ago and have 42 in total. I would love to speed it up, but the device is quite expensive. When I spoke to the dental nurse she said it basically vibrates like an electric toothbrush just not that strong, so I got to wondering if there is an alternative. I mean how does it cost that much for a vibrating mouth piece?