Are verbal quotes for the price of a service performed legally binding?

Question Details:

I was verbally quoted me a price for a service. I then received a bill for much more than that price. I am refusing to pay more than quoted amount. The provider of the service is now suing for the amount that he billed for, even though the verbal agreement before the work was performed was a significantly lower price. Additional information: We went the service provider a check with "Final Payment" on it (for the quoted amount), the check cashed but when viewed on-line the words" Final Payment" were crossed out (this was done by the service provider - not us). Not sure how that plays into it. How will this be viewed in court? Important Notice