No, you are not wrong. Alibaba is a platform for business to business transactions. The $495 may end up being your price (before all other charges) for a machine if you buy a few shipping containers full of the things. If you want to buy a single one, it will be much more expensive and it will require you to convince the seller that you are planning to set up a business and require a sample or something of that sort.

edit: If you don't want to build a machine, you can find vendors through the PP Bazar[1]. Even fancy ones with CE and made from wood somewhere in Austria :D [2]

[1] https://bazar.preciousplastic.com/

[2] https://www.plasticpreneur.com/