New polymer £5 note selling for £65,000 on eBay. Posted on 13th October 2016 by Spinnaker A new polymer £5 note with the serial prefix AK47 is currently listed on eBay for £65000. The seller believes that this prefix with it’s connotations to the Soviet assault rifle of the same name is what is driving the auction. There are currently 12,273 £5 notes for sale on eBay with prices ranging from a penny, to £300,000. The first note printed, with the prefix AA01 000001 – was presented to the Queen, leaving up to 999,998 others with the same prefix.