So I went looking for mostly free things. I did notice that when I did “free only” in the filter, it left out some assets that were free.
But I think I got it all, so here is my list:
Voxel Blocks = $4.99
Inventory System = Free
Advanced Fantasy AI Pack = Free
Action RPG Music Pack = Free
2000+ Sound Effects Pack = $20
Sandbox Fantasy Character Pack = $11
Sandbox C# Scripting = $50
Simple Health System = $2
Total = $88