How much is an ip from Hetzner?

Question

Hetzner

As I understand it, you can buy 3 more IPv4 ip addresses for the server. Total will be 4 Ip. At 0.84 € per month for(en).
There is another option to take the "subnet /28" there 14 ip for 13.45 € per month. Info on the TyK page .
In the table, next to it is + Flexi-Pack (12.61 € / month) (What the hell is it for? What is it?)
How much do you have to pay per month for 14 ip addresses?

And please explain the quote

IPv6 subnet
You can order a free /64 IPv6 subnet. It will be activated immediately (the procedure for activating an IPv6 subnet is fully automated).

Free IPv6? And how many addresses are there. Ps For anyone there is no freebie

Answer 1

for ip + flexi
they just give you a load for using ip, you can’t refuse

Answer 2

/64 ipv6 networks will safely fit the entire Internet. several times ;)
www.potato-people.com/blog/2009/02/ipv6-subnet-siz...
as far as I understand, ipv6 addresses are now given everywhere and by everyone - take it and use it, develop ipv6 internet