Pretty killer price even on one unit at $22 and they have more than 10 and accept best offers so I'm thinking they'll make a deal for qty:
16GB Server Memory 2Rx4 PC3L-10600R - Dell Part SNPMGY5TC/16G 740617187267 | eBay
And in case they run out of those, they also have some HP PC3-14900R for $24/ea also with a best offer:
16GB Server Memory 2Rx4 PC3-14900R - HP Spare:715274-001 658759189516 | eBay
16GB Server Memory 2Rx4 PC3L-10600R - Dell Part SNPMGY5TC/16G 740617187267 | eBay
And in case they run out of those, they also have some HP PC3-14900R for $24/ea also with a best offer:
16GB Server Memory 2Rx4 PC3-14900R - HP Spare:715274-001 658759189516 | eBay