Has anyone used the Martelli Quick bind and zip bind systems, does it work as shown on their video, and is it worth the price ?

I have the quick bind system. I can get it to work fine on pre-quilted samples. when i try in on anything else-no. i've talked to the rep and tried it with the video(new one)playing right beside me-no luck. The last rep I talked to admitted it was easier to do on prequilted fabric. I just needed to "practice" more. NO thanks, i've wasted enough time/fabric. it sits in a box now.