Guidostrunk
Headphoneus Supremus
I know that the LP on the used market is drying up fast due to the mod. I found this one on Canuck Auido Mart which comes out out to be $404 + shipping.
https://www.canuckaudiomart.com/details/649620965-monoprice-liquid-platinum-mint/
https://www.canuckaudiomart.com/details/649620965-monoprice-liquid-platinum-mint/