This is an insane price for a single stick. They are normally in the $130 range.
https://rover.ebay.com/rover/1/711-53200-19255-0/1?mpre=https%3A%2F%2Fwww.ebay.com%2Fitm%2FSamsung-64GB-PC3L-10600L-8RX4-M386B8G70DE0-YH93-Server-LRDIMM-Memory-Ram%2F352681371511%3Fhash%3Ditem521d72a777%3Ag%3A4SIAAOSwThVc3abx%26LH_BIN%3D1&campid=5338535236&toolid=20008