The Bible says:
…so that no one can buy or sell who does not have the mark of the beast, that is, the name of the beast or the number of its name. This calls for wisdom: let anyone with understanding calculate the number of the beast, for it is the number of a person. It is six hundred and sixty six.
The Bible says:
The weight of gold that came to Solomon in one year was six hundred and sixty six talents of gold.
Wisdom. Who was wise? – Solomon. What do you need to buy or sell? – Gold. What was the number of Solomon’s gold? – Six hundred and sixty six.
What is the mark in the hand? It is the gold in your hand – money. What is the mark in the head? – The love of money.
What does the Bible tell you about the love of money? – (It)… is the root of all kinds of evil. …
The (probably deliberately) hidden origin of the word “Dollar” is “Talos” – a Talent, a measure of gold. If valleys are your thing etymologically however, you could consider the valley of death for a little irony.
Jesus cannot be captive to money having no need of gold to buy or sell because He owns everything.
He showed by metaphor the value in the fish he helps us catch (men) by paying the tax, which He said explicitly did not really have to be paid, with the coins He had His followers find inside the mouths of fish. He showed us money is meaningless in His realm but that we have value in us to Him.
The earthly dollar debt will not be redeemed by men, it is too big as anyone with wisdom can calculate, and so the beast will wreak its havoc, but the redemption that actually matters is not counted in money, and it is a price already paid in advance in full by Jesus.
What use all the gold on earth when just thirty pieces of silver bought so much more? Money might be handy but it will buy you nothing on judgement day.