Yield comparison on toner cartridges/refills

Following my initial encounter with the starter toner cartridge on the Brother Hl-2132 laser printer, I have been experimenting with different toner cartridges/refills and noting the cost/yield with each method.

I bought an OEM high yield toner cartridge for $32 (excludes shipping) that claims a yield of 2600 pages. That only gave me 870 pages of actual output at about 30% coverage. The toner is also a little too light for my liking.

Then I bought a toner refill set for $47. All-in-all, I got about 600g worth of toner, even an accessory kit to convert the starter cartridge to high-yield cartridge (which I have not tried yet, but it looks easy enough). After viewing a few YouTube tutorials about the process, I set about putting 100g of toner into the empty toner cartridge.

It was surprisingly easy, much easier than filling up ink cartridges. The cap on the OEM cartridge was a snap to pop off and replace, and to my surprise, the cartridge worked flawlessly after I refilled the toner. The printout was very dark and nice, much nicer than the original toner that came with the cartridge!

And even better, the 100g of toner lasted a whopping 1200+ pages! Two subsequent refills gave me roughly the same yield at the same 30% coverage. Dividing the original cost of $47 by 5 refills (conservatively), it's like getting a new toner cartridge for $9 each time!

Update:

I discovered that for about $50, I am able to buy 1kg worth of toner over eBay, shipped from US. This is double the amount of toner for about the same price. So now I am getting a brand new high yield toner cartridge for $5 every time. It's crazy cheap! I am extremely happy with the result.