"I mean, I wouldn't pay more than a couple of quid to see me, and I'm me"

This quote by Terry Pratchett is a funny method of revealing his self-deprecating mindset. He is implying that he is unworthy much, which even he wouldn't pay a great deal of money to see himself. This might be analyzed as a method of expressing his humility, as he is not trying to boast about his own worth. It could also be seen as a method of revealing his sense of humour, as he is making a joke about himself. It might also be viewed as a method of expressing his gratitude for his own work, as he is implying that he is worth something, even if it is not a lot. In general, this quote is a humorous way of revealing Pratchett's self-awareness and appreciation for his own work.