I am experimenting with a values based price for my work, therefore the price I charge currently depends on your ability to pay. Put simply, if you’re well off, I would expect you to pay more than if you are struggling to get by.
Working in Ecuador, I generally don’t expect the level of pay I might receive in London. However, if you are being paid an international wage by an international company, I generally feel that it is only fair to be paid an international wage according to my qualifications and experience (perhaps consider your hourly wage as a guideline). Equally if you're a 'poor traveller', but with a trust fund, I'd ask you to consider carefully your ability to pay! This system relies on trust.
At the other end of the spectrum, I am in certain cases willing to work for free (depending on what I can afford and how much time I have). I’m also happy, where it makes sense, to accept a fair exchange of goods or work.
This may or may not be an alien concept to you. Don’t worry, we can work something out!