Video calls with Skype between two parties remain a free service, as is voice communication. The cost is in making video calls between groups of users, this functionality is present in a Premium package that also includes the live chat service. You can try it for free for a period of seven days.
The price of this service, after seven days, has a cost of 6.89 EUR per month, but it also allows you to buy a voucher to access this service one day for 4.01 EUR.
To make use of the group video call, one of the participants must have activated the free trial or have the relevant paid access.
The video call function only works if users have the latest versions of Skype for Windows or Mac, in the latter case version 5.0 that you can get directly from here.