We like to let folks test out ski boots. That means we occasionally have used boots for sale. Some of them are listed here, below, for your purchasing pleasure.
Arc'Teryx Procline Support 26.5 - Cool design from Canada packed with features for climbers. This is the non-carbon version of the Procline boot with the Support liner. Skied a handful of times, good condition. If you have a high instep this boot is not for you.
Scarpa Alien RS 28.0 - Newest and coolest boot Scarpa has made to date. Skied once and in near-mint condition. Returned because of marital difficulties.
Scarpa Alien RS 26 - Original Alien with about a dozen days on it. Great condition.