XL is a flexible term

"Clearly sides" means in my case: 12 staves with 32 average per note heads.

However, the included when purchasing printer cartridges normal size enough even for exactly 143 pages with an average of 5 lines and 48 pages score.

Conclusion: Between my definition of XL and HP are worlds apart. But the print quality is unbeatable.
But I've already ordered for the rest of my expression a cheaper option, there's about 350 pages in front of me.