I'm more than aware of Google, the search bar, and, Tails docs but there's quite a few printers on that list. Most which aren't even out anymore. The majority of the rest being an order only item. Being cash is preferred for this type of purchase, anyone know of a model which would most likely be available in stores right now?
You need one from thist list: https://www.openprinting.org/printers
WolflD is correct. When you become a bigger vendor, you're going to want air-gaped GPG / BTC / Monero key handling & decryption and printing all from that air-gaped dedicated device. Air-gaped means this particular device never touches the internet or bluetooth. Only physical USB/micro-USB transfer from internet-computer -> USB -> air-gapped computer, and then back the same way.
Obviously, buy computers and printers with cash from stores or craigslist or similar. No physical address tied to its delivery.
~SQUAAAAAAK! That's my werd.