I would like to help you (I have the printer myself) but I don't understand the question.

Try it though.
The model has 2 black tanks, one for text (pigment black) and another black for photos (dye colour)

If your question refers to the white model, the et-8500. The difference is, the 8500 can only print up to A4, the black 8550 model can print up to A3+.

The printer is supplied with all the required colours, enough for a complete filling of the six ink tanks. Filling is quick and easy, I am very satisfied with the printer. The quality of the prints (especially on photo paper) is very good.

The printer is supplied in the colour black! By the way, it's a brilliant printer! The best I've ever had.

For 581 you get the complete 8550 with black, grey and CYMK.
The other is a scam.