Help :- Yarnfair Stripes shade 56517

Hi,
I am new to this and please bear it with me.
I purchased this wools ages and ages ago. I just got round to do a project but ran out of wool. I only need just the ONE more to finish it off.

I have looked everywhere and even on the websites. Do anyone know where I could buy just the one or find it?
With thanks in advance and happy knitting!
Vikki

Welcome to KnittingHelp!
Have you tried Ravelry? Even the ones that say “not for sale” are worth a message since posters often don’t change the default setting.
https://www.ravelry.com/yarns/library/yarnfair-stripes/stashes?status=&cf=%3F&photoless=0&search=56517