4GB DDR3 ECC REG PC3-8500 - $2.95 / stick

[ALANMAN]

https://rover.ebay.com/rover/1/711-53200-19255-0/1?mpre=https%3A%2F%2Fwww.ebay.com%2Fitm%2FHynix-4GB-DDR3-SERVER-MEMORY-RAM-PC3-8500R-ECC-REG-DIMM-240-PIN%2F254220284237&campid=5338535236&toolid=20008

[JDM_WAAAT]

This is a really good deal if you buy multiple!