I value myself, but don’t I have to be measured by market rates?

When you use LETS, you are participating in an internal market, which is subtly different from the national or regional markets, which use conventional money. Everyone is still keen to get as much cash as possible. But the ability to earn LETS money is enhanced and there is pressure to spend it rather than hoard it. These factors can combine to give a much lower spread between low price and high price services. People who overcharge find that their trading slows up dramatically and their ability to earn is reduced.