I have two Vicor VIA PFM PFM4914VB6M48D0C00 series AC/DC converters. This model:
https://www.digikey.com/en/products/detail/vicor-corporation/PFM4914VB6M48D0C00/5288547These were purchased for a project a few years ago but never used. Still in the pink foam packaging as delivered from DigiKey.
DigiKey and Mouser list these for $666ea but I'm obviously not looking for new price. Make me an offer on one or both. Free shipping within the US. If you're outside the US we can work something out.