The cheapest plan 0.099 Cents for each page 10 pages in the month. 1500 pages per month 54.99 € respectively.

Yeah, depending on where you live, it may be cheaper to go to your local printer shop. Plus minus cost of transport and your time.

I did not check HP’s prices to Poland. Table lists 100 pages as 0.07EUR/page. Krakow, Poland, nearby printer shop takes ~0.02-0.07EUR per A4 page, and there is no subscription. Nor doing 100 pages.