said by Ghastlyone:
Honestly, I thought DDR4 pricing was going to be more expensive than that.
Its a bit of a range and honestly if I buy into the platform I would be taking the cheaper route by starting off with a lower capacity (single DIMM).
However, a 16GB DDR4 2133 (2x8GB) kit could cost about ~$219.
A 16GB DDR4 2666 (4x4GB) kit could cost about ~$479.
So for me a compromise would be buying a single 8GB DDR4 2133 DIMM at about ~$109 then at a later date and a cheaper rate add more. It's tempting to go for the 4GB option at ~$54 but I think that simply wouldn't be enough RAM for a typical use case.
So the only three components I would need would be the CPU, motherboard and RAM. I'm guessing for the entry level Core i7 5820K that it would be about ~$300 to ~$400 and the first run of motherboards would be about the same. So a range of ~$600 to ~$800 not including RAM.
So best lowest guess (hoping for a generous Microcenter deal) is about ~$654 with a 4GB DDR4 2133 DIMM or~$709 with a 8GB DDR4 2133 DIMM.