Last year, when my company was much smaller, I typically employed one person to help me with my landscaping. Keeping in mind that I am only 17 now, my company was obviously much smaller. Last summer, I completely weeded and pine strawed a client's yard. I have always had a good relationship with this client, never having any previous problems. This spring, the same client decides that they would prefer black mulch instead of pine straw this year. The client had not touched the yard weed wise since I had cleaned it up last year, so needless to say there were plenty of weeds. Myself and two of my employees weeded the yard last week and put down 6 yards of black mulch. With a total of 7 hours on the job for the three of us, I wrote her a bill for $40 an hour for the work. Well, a day after I delivered the bill, the client leaves me a message saying that they would like to talk about the bill. When I call them back, they say that my prices are over 100% more than last year, and that the bill was unfair. I countered with the argument that it was only two workers last year compared to the three, we used more equipment this year, I have to pay taxes for my business license now, and I gave her a quote for around 6 hours of work. They still want me to bring my price down, but with no contract I don't really have much room to negotiate. What should I do regarding this situation in your opinions?