Olymp Trade — What is going on with marketplace

Exclusive offers are those things that I especially like about the olymp trade platform. This is why i work with them and will continue working, cause the company is modern and reliable + it offers nice functions.

But the matter of my inquiry is about those features it has, namely marketplace. When my friend enticed me to join this platform, he advertized me the marketplace as something very cool where I could acquire top strategies for free, completely. However, after I entered the platform, found marketplace and found Strategies section, there are those for 20, 30, 50 and even 170 dollars per month! My friend isn't a rich guy and I don't think he believes that it means "for free" lol.
So... I ask here to understand what is going on.