Toner does not reach the target number of pages

Since I am with the achieved number of pages in the toner extremely dissatisfied, I am writing my first Amazon review today.
(1) Using the Brother MFC-7360N comes bundled a "small" cartridge, which should create "about 700 pages". After 343 pages (= 49% of the target), there were electronic error messages that the cartridge is empty and to switch be - and a print stop.
(2) should establish the refilled, Jumbo cartridge TN-2220, the "2600 Pages", led after 1323 pages (= 51% of the target) to the same problem.
(3) Angered (1) + (2) I called Brother on - there was aware of the problem: It happens that any electrical contacts between toner + drum + lasers are not right and therefore have a false resistance. After a phone-friendly instruction I pressed on MFC wild numeric code, which meant that the device was well calibrated internally new and generally more printed.
(4) However, not very long: (adds) at 493 pages (with the old Mini cartridge = 70% of the target) and (summed) 1724 pages with Jumbo cartridge (= 66% of the target), the print image was so weak that I enlarged the cartridges each and shook to still get the following, the last color from the cartridges.
(5) If then (summed) 576/1843 sides (= 82% of "mini" -Kartusche or 71% from the Jumbo cartridge) was then definitively concluded because the typeface gray / white / was miserable again.

Since I am (Brother + Samsung) have always come in various recent laser printers on the specified number of pages and have not changed my pressure behavior (normal text), I have to assume that the promised here "target page numbers" can not be so easily achieved As with other devices / manufacturers.
Taking the 1724 pages (= 66%) of Jumbo cartridge in which this first only gave a faint image to a clear discrepancy between promise and target laurels Is should be noted than that I could make a good rating for this.
Who does not use the Hotline by Brother in claim, is possibly even less to yield (49% to 51%, see above).

The printed image is good and the idea of ​​the free take-back of used cartridges also. It is the sale of cardboard a return sticker with "fee paid by addressee" in, so you can each just unused cartridge with the new carton for free sending.

What stands out in price comparison EXTREME, is that no-name cartridges offered significantly cheaper. Online auction site. Eg 4X4000 pages for 54,90 Euro including shipping correspond converted 6.32 euro for 1843 reached the top sides. If you take only one cartridge about 8.30 euros for 1843 pages ... instead of the 60 euros for the above weak Brother cartridge. This is a price difference of a factor 7-10!

I would be happy to read, on how many pages you come with your cartridges. If my next cartridge is empty, I'll post the results back here.

Product links:
Brother MFC-7360N:
Brother MFC-7360N Multifunction (printer, copier, scanner and fax)
Other providers of Brother Jumbo cartridge:
Brother MFC 7360 N (TN-2220) Original Toner Cartridge - Black
Brother MFC 7360 N (TN-2220) Original Toner Brother - Black / Black / 2,600 pages
Brother DCP 7060 D (TN-2220) Original Toner Brother - Black / Black / 2,600 pages
Brother MFC 7460 DN (TN-2220) Original Toner Cartridge - Black
Brother HL 2270 DW (TN-2220) Original Toner Cartridge - Black

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Addendum: Also, the next toner disappoint in the same way: 1812 pages printed up even after repeated shaking the cartridge just a miserable expression was still possible: 1812/2600 = 70%
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Addendum: I have now found a third-party toner Original quality supplies and promised 5400 pages has actually made limp until 5407 (!): Http://www.amazon.de/gp/product/B0081ZFR9K
Printer-Express Super XXL Toner replaced Brother TN-2220 TN2220 5400 pages