Corsair Memory Kit 16GB (2x8GB) DDR4 2400MHz SODIMM Memory, (2 x 8GB) at Amazon.com
Corsair Vengeance LPX 16GB (2x8GB) DDR4 DRAM 2400MHz C16 Desktop Memory Kit - Black (CMK16GX4M2A2400C16), Vengeance LPX Black, 16GB (2 x 8GB) (B017NW5NZY) | Amazon price tracker / tracking, Amazon price history
High Capacity DDR4 Pricing: 32-128GB - Price Check Q3 2016: DRAM Prices Down Over 20% Since Early 2016
Amazon lists the first set of DDR5 RAM with no motherboard to plug it into | PCGamesN
G.Skill Trident Z RGB Series 16GB (2 x 8GB) 288-Pin SDRAM (PC4-25600) DDR4 3200 CL16-18-18-38 1.35V Dual Channel Desktop Memory Model F4-3200C16D-16GTZR at Amazon.com
QNAP 16GB DDR4-2133MHz R-DIMM Memory Module [PN: RAM-16GDR4-RD-2133] at Amazon.com
Corsair Vengeance LPX 16GB (2x8GB) DDR4 4000 (PC4-3200) C16 1.35V Intel Optimized Desktop Memory - Black at Amazon.com