I really hate to say (and I am not a doomsday proponent) it but thats good advice. I kinda half agree that the markets that most signmakers & cabinet makers are after is pretty much done in most of the US. Unless you are already in a business and are currently selling a product that the added effeciency, accuracy, and capability will VERY QUICKLY pay for it all... the hardware, the software, the deep learning curve...and I emphasize, Very Quickly. Then I really would consider it deeply before jumping in.
If you decide to go with it... I'm sorry to say, a net search will turn up literally thousands of auctions, repo's, and liquidations for sale on the cheap in every major city.