A VERY good question indeed - and from my experience (admittedly dated, but likely still true) is that you will be even more dismayed were this a Hewlett-Packard laser printer as they really shaft you on supplies.
I went with Brother in spite of the fact that HP is the "industry Standard" for laser printers - but I have two good reasons:
HP's competing product for this printer is more expensive and has received terrible reviews for being flimsy and poorly-supported.
Brother ink jet cartridges are MUCH cheaper and MUCH easier to refill. My favorite printer ink company "Printer Ink Warehouse" sells kits and bulk ink and I've run 2 different Brother color ink jet all-in-one units for years for pennies. They don't yet have replacements for this printer's cartridges - but say they will and that Brother Laser cartridges are the easiest to refill.
I love OEM stuff, but since I'm my own system administrator and tech guy, I can be "cheap" and still do well.
So - rather than buy a 2nd (3rd, etc) printer and cannibalize it for the cartridges - buy aftermarket, re manufactured ones, or refill your own. Easy and cheap!