If they pay $20 mln for orbital trip, why not? But who will get the money? World government?

I don't have everything but I would love to have a piece of the moon, even if was only on paper.

but you would never set foot on your "land"

But who will get the money? World government?

I declare myself Emperor of the Moon. Send the money to me.

But seriously, folks, by international treaty, claims on extraterrestrial
territory are not allowed (I distinctly remember that the US had to
issue a statement that the flags that the Apollo missions planted on the moon were
merely identifiers, not marks of territoriality - see this clip). All you get for
your £23.98 (USD $37.00) is some paper an ink worth less than a
quarter. Nobody can sell property on the moon or any other planetary
body any more than they could sell rights to your own back yard.