HMA84GR7MFR4N-UH is a 32 gb DDR4 ram stick, $110 on amazon. There's 384 of them, that's $42240
M393A2G40DB0-CPB is a 16 gb ddr ram stick, $43 on amazon, there's 768 of them, that's $33024
SR2JT is a Intel Xeon E5-2683 v4. I see them for $340 ea from random suppliers. There's 192 of them, that's $65280
SR1XP is a Intel Xeon E5-2680 v3. I see them for $133 ea from random suppliers. There's 192 of them, that's $25536
8WKHG is a adaptec 12G HBA, I see them for $620 ea from random suppliers. There's 96 of them, that's $59520
TXCMC is a dell 12G HBA, I see them for $60 ea (Cheap!) from random suppliers. There's 96 of them, that's $5760
Sooooo, without the chassis, that's $231360 in parts. Sure, the random suppliers (first results in google, generally) may not be too correct, but it's still damn far from the total cost. 231,360 is ~4.6% of their asking price.
On the other hand, if you interpret the listings above as the component parts as a single rack, and there's 16 of them (well, 13 of one, 3 of the other), that makes a bit more sense.