There WAS a story like that, probably in the 1950s! don't remember how they got money that would pass, but an elderly couple got some sort of gate that let them go back to the Depression to do their weekly grocery shopping, and lived happily ever after. Which was the end of that story, after mid-story 'conflict' about their poverty and who invented the gate and how they got it.
Your ideas could be a sequel to that story.
As for the bills meeting and exploding, what if the buyers are in our future and coming back to 2013 to buy at our prices, using not physical money but 1s and 0s stored in some computers. Granted doing that hack might be more work than collecting old paper money.
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Your ideas could be a sequel to that story.
As for the bills meeting and exploding, what if the buyers are in our future and coming back to 2013 to buy at our prices, using not physical money but 1s and 0s stored in some computers. Granted doing that hack might be more work than collecting old paper money.