It's not always just the customer.
Yesterday, I needed to get some motherboard screws.  The only half electronics place nearby was Best Buy.  I've gotten stuff like this from Best Buy in LA (where I learned a lot about what Best Buy sometimes does and doesn't have), but this was my first time at the new Springfield, OR store.
I walk in, and find a rep.
"Pardon me, do you have motherboard screws?"
Person doesn't know answer, so goes and gets the senior sales guy, the "tech".  When asked, he answers "Well, this is a new location, so we don't have any specialty items like that yet" (so far, I'm fine with this.  They really do sell larger scale components, I was just sorta hoping they might have 'em, but it's no big deal.  But then he continues with "but if you go to 
http://www.bestbuy.com, you can probably order them there."
As soon as he rattled off the website, I turned and began my departure.  I laughed at the idea of ordering some motherboard screws from freakin 
http://www.bestbuy.com.  $1.99 + $8 shipping, 6-8 weeks probably.
There's another thing I learned in LA: "Gracias, para no gracias."