There is not a “standard” cost when it comes to piano lessons.
But basically, there is two ways to learn:
In person or virtually
How much are piano lessons
A personal tutor can be very expensive. Due to the recent pandemic, it is more difficult now to obtain private “one on one” lessons at home, so more and more people are deciding to learn digitally, by following along with video piano lessons and tutorials.
There are many clips on Youtube that you have probably searched for and found some useful tips here and there. Sure some people can be self-taught that way. But the best way to learn piano “virtually” would be to follow along a piano course created just for that. A piano course to take the beginner step by step into being more comfortable and fluid playing piano.