Here is a graded AFA 80 Cliff Climber that we got in the massive MOTU collection. It's one of the harder add accessory packs to find and very hard to come by still sealed. This one came out in 1986 just as the toy line was dying off and sales of Masters of the Universe toys were slowing to a crawl. Production numbers are not released for these toys, but estimates put the toys from 1986 at around 10% or less of the early year toys from the line.
Grading isn't always about the actual grade, but many times about preserving the item. In this case these boxes are very hard to keep in good condition due to their shape. Grading protects the box from future damage. Plus makes displaying them SO much easier as you can stack the plastic cases if need be.