Yes, you are crazy. It is insulting to have some A-hole walk into your shop with a brand new part they bought elsewhere and ask you to fit it. Most shops will but will charge you more for the service than they would've had you bought it there. The shop I worked at in BC would fit any part for free if you bought it from us, we'd charge like hell if it was from the Internet and politely let the customer know that we fit stuff for free. If you expect to waste someone's time by asking for info and then shopping elsewhere, you should also be expecting to be treated badly.
That pretty much sums up the attitude of typical LBS's for me. Negative.