As for "normal" cartridges, the only existing pack contains much ALL the combined cartridges (B & W and color) for "high capacity", the only existing package CONTAINS colors and not the B & B. This is a logical ...
I know it was stated on the website and that I only had to pay attention but when you already takes time to compare references (including the price / capacity that it is not specified), we forget sometimes to check the evidence ...
Finally, since we do not know the real capacity cartridges (their "autonomy"), it is unclear whether it is a case by ordering the so-called "high capacity".
And that there is also the reference T0711H, a 2-pack Black & not "high capacity" but only "high capacity" ... Good luck :)
