I am actively looking to donate to organisations that plant trees and, as far as I know, there are several websites that allow you to do that. Some offer the possibility to follow the tree's life through pictures, to gift trees, to know the location where the tree is growing, while some others don't.
What I am not getting is the difference in price. I get that the more "services" you have, the higher the cost but... does this explain a difference in terms of tens of euros? In a website I found I can plant a tree for a few cents or few euros, while in others I can plant a tree for much more money.
So...in order to make it right, which path should I follow? Less tree, more money with "services", or lots of trees with the same amount of money and no services?
Some websites, as examples (no affiliation):