Not that it was ever extraordinarily expensive, just takes quite a bit of startup capital. If this is to be believed, you could soon be up and running for $1500 US, which is un-sane.
I personally forsee some problems here, but nothing that would be show-stopping. There are some folk artists out there who still live cut records in real time of individual performances making each record truly unique, so this kind of workflow isn’t unheard of, it just wouldn’t be cheap for the customer if you wanted to turn a profit. You’re out $10 in raw materials, plus a decent record sleeve and art, plus time, wear/tear on the machine, and shipping. Probably have to charge 30-40 USD to be profitable. But very interesting nonetheless.