Thanks for the info! By the way, you can report incorrect specifications directly on the product page.
Product page -> Specifications -> ↓ Show more -> Scroll down -> Report incorrect data -> And then change the corresponding entry or enter a "general error report".
Yes, we also sell the yellow cartridge in the large version for the Brother MFC-L3750.
This is exactly the item to which your question refers. Brother TN-247Y
Correct, a toner can print approximately 3000 pages. The specifications refer to one toner, and since this is a double pack, a mention of 6000 could mistakenly be interpreted as a total of 12000.