I use and have previously used Brother LASERs (current is HL2270DW) and have previously and still do refill my toner from fleaby, cheap toner. Costs ~ $8 per refill. Works great, even for printing PCBs via toner transfer absolutely no difference in print quality on paper.
But I chose the Brothers carefully as they (well the units I've used) use a variable corona voltage because they return un-used toner back to the cartridge. Thus the printer needs higher voltage for attractive charge, meaning it'll works fine with elcheapo toner.
