There is nothing wrong with asking for quick and cheap!
Disagreed, it's just plain insulting to the service provider and his peers. It suggests that you think that they are not entitled to be fairly paid for the service they provide.
And I have to disagree with you there, Pilot DAR.
There's nothing holy about flying. If I say I want a quick and cheap legal service (some hopes to either!) the lawyers might get a bit sniffy, but it's a reasonable thing to ask. Ditto for car repair, builders, restaurant... Provided a service provider meets legal requirements (including safety), then if they can also be quick and cheap then they're likely to be successful in the market. And smile at the ones feeling insulted.