At SMA we use the Brother 2040, when the toner is finished we just buy a new one and sell off the old one. It's almost as cheap as buy a replacement toner, that way we get a new printer every 12-18 months.
If you keep an eye out they turn up on special for about $100 occasionaly, keep an eye on Dick Smith web site, DSE also have another brand that is exactly the same as the Brother 2040.
I think Trevor use the same printer at Castle Hill
Hope this helps
Regards
David
SMA Treasurer