I just found a GREAT place for toggle clamps. Used to just get them at Harbor Freight, but I needed 3 dozen of them for a shopbot jig and none of the stores had that many in stock. So I called to place an order, and shipping was 7-14 business days, unless I wanted to spend $40 on two day shipping!
Found this guy and not only does he beat HF on pricing, he has MUCH more selection and shipping is a flat $8 with Priority Mail. Not only that, but I received the shipping label confirmation about 30 minutes after I placed the order, which means he packed and shipped them ASAP!
So, if you need toggle clamps, I can highly recommend this site:http://www.toggleclamps.biz/