I can't find my pulse

Can anyone tell me why all my favorite stores have stopped carring the Yale Pulse Mini spools? I love that stuff, but now it seems to have gone by the wayside at West, APS, Layline, or even here for that matter. I guess it is dead for ever, even though Yale still shows it on their website. <img src="http://www.catsailor.com/forums/images/graemlins/frown.gif" alt="" />