I wonder if we see low prices for this kind of hardware ever in the future. FOMO is driving some of my purchases. At the moment I am contemplating to buy CSE 847-E16 for $80 just because it is so cheap. I have no use case for 45 spindle disk shelves and possibly it will be a worse choice over my Netapp disk shelves which are super quiet and surprisingly more power efficient yet it is such a low price for this great hardware.
I guess the answer for future prices depends on how many of such servers/enterprise hardware will be shipped in the future. Cloud is growing very strong and companies are reducing their IT hardware purchases. Big cloud companies are utilizing their own custom hardware optimized for power and space. Most of this hardware will have no home usage so chassis like this may become less available in a few years as small IT shops are getting closed due to Cloud migration. For proof, watch the news for Netapp.