Was ist not good? I was considering it for home use, since I very rarely print anything and the 1€ a month would maybe be worth it for a headache-free printing experience.
If you understand that it's basically a Netflix subscription for ink, it works great, especially if you print photos it can save a lot of money. If you print a few things a month and suddenly go to 400 pages, you might run out of ink before the next set arrives.
When you anticipate running out soon, you have to give CS a call and ask them to send the next set of cartridges sooner than later.
Still, anything is better than paying full retail for refills at Cartridge World.
If you rarely print and don't need to print in color, I would suggest getting a printer that uses toner instead of ink cartridges. Those printers are a bit more expensive and so is the toner, but what's really nice is that you can print like a thousand pages on a single toner cartridge - and those will never dry up due to being a powder. You can get a no-frills Brother one for under $100 when they go on sale, and HP has some that can also go under $100 on sale.
That being said, if you don't mind paying 12€ a year for not printing most of the time, then go for it, but like @scarcer said, you will need to reach out to HP and call them if you plan on printing more than what your plan normally allows.