I'd say around the £10-12k mark based on other YB converted cars. They don't seem to be worth as much as a genuine Cossies.

Wasn't there a YB converted Puma on eBay not so long ago? Yellow one? Can't recall the price but it wasn't expensive.

EDIT: It was on here, too, unfinished for £7000. https://passionford.com/forum/cars-f...t-details.html