When having an offline face-to-face conversation, you’re less likely to deal with assholes than on the Internet, simply because the anonymity factor associated with the Internet tends to sometimes make the worst in people surface. The Web has a *lot* of advantages but there are also disadvantages that have to be acknowledged, c’est la vie.
What I’ve learned is that being polite is the rational thing to do.
Don’t necessarily do it for reasons related to let’s say morality, do it because it’s the only rational approach.
Being polite can make the difference between a lead that turns cold (or worse, a pointless back-and-forth argument) and a sale.
Sometimes, you have to educate end users and you shouldn’t be surprised that certain people will be offended by the fact that you’re asking what they consider an outrageously high price for an asset they don’t yet understand.
The commercial Internet is less than 20 years old and lots of potential end users are still clueless to put it mildly, be polite and keep your eyes on the prize!