Personalised Reg Plate

Hi guys!

I wonder if I could grab some opinions?

As my mini will be off for PX soon I shall be taking the reg off.

It reads "CO03 PUR" and has been valued online for £2700.

I know this isn't a realistic price at this period, but in your opinions what would you suggest it's worth? And good places to sell please :)

Thanks in advance!

Rach :)