Do you have a contact? Or a link to the original ad?
I might be in the UK in the near future, that uni would be a great ride for the time there, then a great part donor for a project of mine. At that price, it would do great for all those plans…
I had four before I could actually stay upright. Now I’ve acquired a muni which I probably won’t be able to do anything with for months but the price was too good to miss! On a bike, you can change gear. On a uni, you change unis. The real answer to the perennial ‘where’s your other wheel’ question is ‘in my boot with the other three’. You might as well get used to it.
I found it helpful using different wheel sizes from the start. Being quite tiny, it was a 16" which gave me my first feel of being able to turn the uni under me to keep balance, and it was a nice size for riding in the kitchen!
I looked for him on Gumtree. Is it the one with no picture that describes it as a large wheel unicycle? There is no way I could ride a 29" but I am near enough to Bristol to act as an intermediary if anyone wanted it.