Probbably you should like to know what are additional charges - described on MyHeritage site:
Help Center > Account and Subscriptions > Subscriptions
Whats the difference between a FAMILY SITE SUBSCRIPTION and a DATA SUBSCRIPTION?
A Family Site Subscription (Premium or PremiumPlus) entitles you to increased storage on your family site for people in the family tree, photos, videos and documents.
A Data Subscription entitles you with the access to billions of historical records in all the collections in SuperSearch. You also get unlimited access to Record Matches, including confirming and rejecting matches, if you have a family tree on MyHeritage.com.
In addition, you can save and extract information from historical records you find in SuperSearch or get with Record Matches directly to your family tree.

I believe it is a DNA testing site that you can link to any of the genealogy sites. There is a website for '23andme' if you'd like more detailed information. It is 23andme.com