Ok. Now you're saying that people are not actually buying numbers. So, what things in the quantity of 10 did a guy that spent $440K to have number 10 in the Satoshi's system, actually bought?

They bought digital currency called Bitcoin. A digital money that exists only in the internet, in the Bitcoin blockchain which keeps tabs on who owns what of this digital money. They bought ownership of those Bitcoins included in the transaction.
So after the transaction is verified by the network, the change of ownership will be updated to the blockchain.

Just tell me if these digital things are too difficult for you to understand and we can go back to talk about "numbers" or even "lollipops" if that makes it easier for you to comprehend.