Thrill of the hunt does it for me, weather looking in store or online.
WANTED BOTS: G1: Horri-bull, Snarler, Mainframe, Chop Shop, Ransack CHUG: Spin Out, Cordon, Brotropolis Rescue MASTERPIECE: Acid Storm
ENERGON: Six Shot
I remember the awesome feeling as a kid when my father would come back from a work trip with a Transformer. I remember getting G1 Tantrum well before it was released here.
As an adult there are less and less surprises in life and I mostly like it that way, it makes the few surprises really special.
So to answer your question mate, no I wouldn't pull back collecting for that feeling. Instead of receiving the surprise I now give the surprises to my son. That itself is far better.