To preface, and before I start a flamewar: I blow a good chunk of money at more than one Peninsula LBS.
On occasion, when there's a doorbuster deal or something at BikeNashbar or Performance Bike (the website), I'll buy a couple of random things such as Bay-Area-Winter gloves (they're like $11/pr). I don't need $50 mtn gloves, I just don't want my fingertips to get cold when it dips to the low 40s (jeez, when was that). None of the LBSes around here have cheap gloves like that, and on top of that I'm carless, so if it's more than a few towns away I can't even get there after work before they close.
*However*, since moving to the area, I've noticed when I buy stuff from Performance Bike it takes almost twice as long to get here as it did in PA. At first, I blamed it on the high pop. density causing shipping lines to back up, but I just got a vacuum delivered that I bought two days after the gloves. The gloves for which I paid $8 shipping--about a quarter of the total price--so it's not like they should be completely cheaping out on the shipping. They also aren't including a tracking order, so I'm not _really_ even sure they shipped it yet. Where do you buy stuff online?