Bargain Thomson Elite Stem - Unused

I got this from Tynan a few weeks ago. I don't need it.

Thomson Elite Stem - 5° rise (or -5°) / 100m / standard 25.4mm bar
size - all bolts upgraded to titanium fasteners - mint condition /
unused - £20

His thread with photos
https://www.lfgss.com/conversations/284225/

Paid £20 for it. I want £20 back for it.
Will post or collection from NW5 or Spitalfields during work hours.

thanks.