yinakoSGA Hi there,
No disrespect intended but the main problem with "free art" is that you simply cannot make a game using them. The main issue that just about every hobby developer faces is, where do I get the actors from? The main hero, the soldiers, where do I get the animations from?
There are many people offering free or cheap art projects but almost all of them do not include any characters. Mixing art that has different styles just doesn't work.
We hired the services of a very good animator and artists for our project so I know how much work and effort goes into making a hero character but without a character it is difficult to make a game. Of course there are expections for example where the "hero" is a spaceship or other static object.