B Grade/A Grade Skywalker

What’s the difference between a B grade and an A grade Skywalker? Is one made of plastic or something?

B has a vibe.

B Grade typically means a MINOR flaw in the production process, normally anno. mistakes. B Grade = Less than Perfect (Not piece of crap)

B-grade: A yoyo (skywalker in this case) with an asthetic flaw, or a vibe. or sometimes (not always) both. it usually is just an anno flaw, but vibe seems to be happening in B-grade skywalkers.
A-grade: A skywalker that has no problems; No vibe, an no asthetic flaws.