Depends on your point of view. Before this, I had an HP Laserjet 3 with approx 50,000 pages (so maybe 2,000-2,500 pages a year). So yeah, the Brother may get me around 5+ years, but a) the drum has a shorter shelf life than that and b) 5 years is still way to soon to junk a perfectly good printer. As long as it works, why replace it?
The HP was actually about 50 times the price of the brother. And with inflation more like 100 times the true price. I'm not saying the brother isn't good value for a solid machine, just that the environmental price of their broken business model is awful.