Expensive is a really relative term right about now... 64gb DDR4 LRDIMMs could be had for about 250$ each on eBay before the chip shortage. While that price is a "good-ish deal", it really wasn't unheard of. A search I just did returns more than a few hits...
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Yes for CPU, no for RAM. You can buy a computer with terabytes of RAM just fine. It's just expensive.
Expensive is a really relative term right about now... 64gb DDR4 LRDIMMs could be had for about 250$ each on eBay before the chip shortage. While that price is a "good-ish deal", it really wasn't unheard of. A search I just did returns more than a few hits...
Now compare to single GPU prices...