It really doesn't matter how much you spend on the goggles, if they got a good review buy em, shoot them at point blank range a couple if times in different areas and if they hold up...then your good to go.
I did that with some Auto glasses I got for free from my teacher. perfect for shooting cans
Anyway and if your asking about protection from stray BB's, either get a helmet or some sort of hat "boonie, basball" Anything helps.