I have my pair of size 48 (US 14) Lowa Civetta double plastic boots. In great condition... used twice but found they just weren't right for my feet. New they are over $300. Asking $150, but make an offer.
I also have my wife's pair of size 40 (US 7.5) Vasque Radiators. They are a synthetic double boot with Boa closure. Ultra lightweight winter boot. These are going for around $315 from most retailers... we're hoping to get about $200... They have been used exactly once... on Adams South Spur so they are ALSO in superb condition.
Civettas on left... Radiators on right. The boots in the middle are already gone, sorry.