I can’t vouch for refillable toner, but Xerox (formerly Samsung) SoHo printers with network, duplexer and replaceable rollers are unbeatable. 3000 page toner,

I can’t vouch for refillable toner, but Xerox (formerly Samsung) SoHo printers with network, duplexer and replaceable rollers are unbeatable. 3000 page toner, 9000 page imager, AirPrint, Linux and macOS support, incredibly nice economode, starts quick, prints fast. No frills printers with tons of goodies. I had two. First one lasted a decade, rollers gave up. Second one (MD2825) has replaceable rollers and is around 6-7 years old IIRC. Unstoppable.