To ask why people feel the need to sell their new £5 notes

[Helloitsme87]

For more than their actual worth.
Someone on a Facebook selling site is seeking 4 of these notes for £100. They are worth £20. It's really starting to grate on me.
Disclaimer. I am drunk and totally overreacting

I occasionally sell rare 50 pence coins... for more than £1 each after fees & postage. I'd flog a fiver if I thought I could get a good price.