I've got many Customs, and many factory knives for less at Blade than I could have online. Not always the case, but it happens.
You get the makers price on customs, and a few have gave me some off of their regular price. No shipping cost either, and I've got a few super deals from individuals selling customs from there private collection table. One was a rare D'Holder for $550, and a D'Holder collector offered me $1200 right after I bought it. Every year he kept offering me more, and more. I didn't want to sell it, but I finally did, as he really wanted that knife.
Busse offers Blade discounts on some of their knives as well.