I'm pretty sure that I've only purchased one folder - a ZT 0551.
I've gone a little nuts with fixed blades, though...
I've bought a "scary carry" in L6 from BAcustomknives; Bark River Bravos 1-LT, 1.25, and EDC; 3 LT Wright Patriots - bone, ironwood, and elk (2 were intended as gifts, but I'll probably keep at least one of those), and Battle Horse Knives Pitbull and Busy Bee...I feel like I've left 1 or 2 off this list.
I'm also planning to place an order on Monday with the Swamp Rat custom shop for a Rodent 6 that I should have bought last year; and I've got an order pending that I placed in November (Waki).
Speaking of "pending", I'm 25 months in on an order that was supposed to have a 12 month wait. To be honest, I've totally lost interest in that one...it might show up in the Exchange, if it ever gets here.