It is definitely worth the money, it's just a tight helmet. Try it out before buying. Very good choice

Awesome helmet. I have had it for more than three months now and it has made a very good impression on me. Very good ratings in crash tests, it outperforms more famous brands easily and with its price (I got it for 150 €) the value for money is simply unbeatable.
The only negative is that sometimes it gets "hot" on the inside and it is still winter. I don't know how it will behave in terms of internal temperature in the summer.

For its value, it is the ideal helmet for all uses!
Absolutely satisfied with its quality and behavior on the road.

Let me mention 2-3 basic points and some comparison thoughts with the AGV K3 SV that I replaced.
First of all, it is a 5-star helmet in terms of safety and has also been certified by ECE recently (the K3 is 4-star...).
So we are talking about the safest option in terms of specs. It is also a 2019 model (this particular one) with all the technological advancements and materials that come with it.
Specifically compared to the K3:
1) It is quiet... no comparison to the noise (where most cheap helmets suffer). And the K3 is equally quiet.
2) It is tighter on the cheeks, with the pressure distributed over a smaller area. It's like the pads are pressing on a smaller surface compared to the K3, which was balanced on the entire cheek (-). However, the C70 is still very new and maybe the pads need some time to conform to the shape of the head-face.
3) A slightly darker sun visor than the K3, which is better for me (+).
4) Many times, a better mechanism for the sun visor of the C70, in a much better position and it doesn't fall from its original position because it is pulled back instead of forward on the forehead like the K3.. (++)
5) The materials seem slightly less luxurious (the same quality) compared to the K3, but I have to say that the K3 didn't hold up well over time, not at all.. it remains to be seen for this specific one.. (-)
6) The strap closure is the same in both, with a better mechanism in the C70, but one strap is slightly shorter (not adjustable) and it feels a bit strange to me.. overall, the mechanism is more modern in the C70, but maybe I preferred the other one which was a bit longer.
7) The pads are equally easy to remove.
8) Same visibility. No noticeable differences.
9) The visor tends to fog up in the few kilometers, but the strange-nice thing is that it doesn't fog up in the front like the K3, but on the sides! Yes, it doesn't fog up on the forehead like the K3, but on the peripheral vision, so I don't need to open the visor because it clears up as soon as I start riding.. better than the K3 (+).
10) They close equally securely, but the C70 has a more proper closure and it's easier to open. The other one required quite a bit of pressure. (+)
11) In the cold winter weather that I tested them, they have the same air sealing. At least I can't notice any major difference.
12) The mechanisms for the air vents are much better in the C70. Clear. (+)
13) The chin curtain on the K3 was made of solid fabric and held up better against the cold, while on the C70 it is perforated and I can't remove it, while on the K3 it was removable (although I never took it off..)

Overall, it seems that the K3 was more comfortable and of higher quality, but it didn't hold up over time and it was 4-star rated.
This one is much more modern in design, it's around 60-70€ cheaper, it has better mechanisms, and it offers similar practicality. I don't know what will happen in the long run, but I couldn't easily find spare parts for the K3 in Thessaloniki, while HJC, being an American brand, seems to have easier access to them, maybe due to the market..
For me, I would buy the C70 again simply because the K3 didn't live up to my expectations in these almost 4.5 years, and the C70 carries a more modern package.