The Vendor Client relationship - in real world situations

I've done customer service work for over 15 years. If I had a nickel for every customer that wanted to pull this kind of crap I'd be rich.  This type of nonsense is SO unbelievably common it's staggering!!! I've wanted to slap people more times than I can count.

wow...that is too spot on

oh my it does happen

Awesome

I'll show it to every client :)

BRILLIANT! YES!!!!

makes me depressed

Should have had BUT IF I GET HIGHLIGHTS FROM YOU FOR FREE YOU'LL GET EXPOSURE

Sure however, if you PAY for HIGHLIGHTS I he would still get EXPOSURE

This only happens because small businesses bend over backwards for these demands. As a small business owner, you've got to stand up for yourself in a calm, polite, and understanding way.
Accepting a company credit card is always good. Also - get it in writing first, and make sure that they know final price is determined by the actual perameters of the job (which you know the client is going to change after you've quoted it.)