When you buy a new car, and you ask the sales person whether you can also get the empty, filthy McDonalds cup inside of it as well, and they bill you $20,000 + $1.50 for the car and the cup, I am pretty sure you would be pissed off.
I have just returned from my LFS (Local Fish Shop), where I purchased $300 of consumables and live stock. Needless to say, I was furious when I saw they charged me $1.95 for a small piece of Bryopsis algae, something that fell off another rock of coral, something considered by everyone in the hobby to be the ultimate pest and that, if found to be present on a rock of coral you are interested in buying, would actually prompt you to reconsider buying the rock.
They charged me $1.95 for a nuisance algae. What a rip off. I was not in the mood for fighting about $1.95 but it sure does change my perception of the store.