I can give you $500 for them.

I'll give you $501.

I live in the UK and haven't used cash since before the Covid days.
Keep a few bob in my wallet just in case, but they look as if the moths have started eating them.
Card or 'ding' it on my phone.
You really do not need a bundle of the stuff.
Most of Europe is the same.

Pounds
 

Hi. Is the pound in note for or coin form?

I would like 1 for my collection if possible

£1 and £2 are coins, £5, £10, £20 £50 are all notes.
All notes are now Polymer, no paper anymore.