I agree.. i would''ve payed for a PRO license if the price was around $30 .. $70 is way to much.
You know how rich Markus Persson became just by selling his Minecraft for a couple of dollars..
It's all about quantity.
I bet if you sold the editor for around $30 you make it affordable for 3x more people
Less buyers with high prices = $$ (2x70=140)
More buyers with lower prices = $$$$$$ (6x30=180)
Has always been this way.. and it will always stay this way.