I really don't get it why you'd buy this. The reviews showed it barely faster than the 32 core epic. Tiny differences. And you can buy the 32 core Threadripper chip for the same cost as just the motherboard here...
Oh, it's totally overkill, but there are some people for whom $3k + another $1.8 for the motherboard actually isn't a ton of money. (I'm not one of them.) For those people, why not get the ABSOLUTE fastest on the market today if that's what's important?
You can get a perfectly decent car for like $20k new, a pretty good car for $30-$40k, and a faster, luxury car for say, $50-80k, but there's people who spend $500k+ (and sometimes well over $1m) on supercars, even if, when push comes to shove, they're only somewhat faster, and you very seldom push them to their max anyways.