The United Kingdom's new polymer-based bank note may say it's worth 5 pounds, but collectors have been paying well over that amount to get their hands on some of the first ones in circulation.
One eBay seller, who goes by the name of robbieyeo68, based in Southampton, England, sold a new note for 227.56 pounds, or nearly $300, on Sept. 2, a return of more than 4,000 percent.
He isn't alone. The BBC reports that another seller on eBay managed to get more than 400 pounds ($515) for three of the bills.
The key to the increased value is if the serial code printed on the note starts with AA01 it means it is part of the first batch — and could be sold for a tidy profit.
The first ever note has the serial number AA01 000001, but is said to have been given to Queen Elizabeth II.
The new note paves the way for a new generation of security features, making the note harder to counterfeit, the Bank of England claimed.
They include a see-through window featuring the Queen's portrait as well as Big Ben shown in gold foil on the front of the note and silver on the back.
Novelist Jane Austen will be the face of the new 10 pound note from summer 2017.
Artist JMW Turner will appear on the next 20 pound note, due to be issued by 2020.