Sam and the Tooth Fairy have a long and colourful relationship, and I wish I had kept all of the letters back and forth. As far as I remember, this was Sam's first lost tooth, and Chas was helping him to organize it properly, being way more experienced in these matters. The Tooth Fairy paid in full on this occasion.
I have to say, the tooth fairy wrote some great letters back herself. But she was often a day late, or broke. And she once charged Sam 90% of the fee because his tooth had fallen off a jetty while we were on holiday and been swallowed (allegedly) by a very grouchy (and stingy) moray eel and had to be forcibly recovered. The Tooth Fairy explained this in a rather wet letter and Sam appealed for justice, but to no avail.
Anyone who tells their kids that Santa and the Tooth Fairy et al are not real, are missing out on some serious fun.