These overboots kept my feet toasty on the summit of Denali last summer, as described, here. I only used them once, from 17k camp to the summit and back. They were purchased in May of '08. They have a handful of small crampon nicks, as can be seen in these photos. Product info can be found at Forty Below.
FedEx standard shipping in the lower 48 (US) is included for $100, though I can ship it faster at buyer's expense. Pickup may be a possibility in the Bay Area (Cali). PayPal preferred. Please email me with any questions. Thanks for looking!