If I can run a mini fleet of ender 3's, make useful stuff and not burn my house down, I'm confident you're capable of learning to run a 3d printer.

Yes to everything kb and veen said.

Anecdotally I buy my PLA and PETG in bulk for approx $10-11 per roll from a guy near me who bulk imports and resells the stuff. ( I don't actually know if he's still in business anymore with the whole once in a century trade war thing) No matter the brand I chuck it in a dry box full of dessicant beads for a while before I use it, no issues. Heated filament dryers are nice, I've never found I needed one since I got 4 Ikea samla boxes and filled them with dessicant beads and rolls of filament.

I'm actually going to an additive manufacturing conference here in Metro Detroit in a few days, I'll report back with anything cool.

PLA and PETG filament recycling is becoming a bigger and bigger deal as people come to terms with how much waste is involved with fdm printers. I save all my waste, segregated by plastic type with the long term end goal of grinding and re extruding it, eventually.