Cheaper yes. But I wouldn't be so sure about the service. I just decided to order a Biteme guard. Here's what I've noticed so far on their service.
Sat night at 3am I send of an e-mail to them wondering if they can make the custom guard I'd like.
Sun at noon I check my e-mail and they've repsonded with a yes, a quote, and let me know that they can send out a kit as soon as I give them my address. I reply with my home address.
Mon AM: They've e-mailed me letting me know the kit is on the way.
Thurs AM: Kit arrives to my door. I'm taking the impression tonite and mailing it back their way tomorrow.
So far, I'm more than impressed with their service.