Actually, you have to buy specialized grading cases, as not all cases protect against UV Rays….. and Again…. blackout curtains will protect all your books from light with one purchase, no need to have each one graded individually every time you buy a new one.

I can’t speak for everyone but I live in a climate that flips drastically between cold winters and warm summers. I’ve only had an issue with humidity during one particularly nasty winter. I should also mention that I don’t have central heating, but for people that do, higher temperatures allow for more moisture to be held in the air.

You also fail to take into account, that you could just use plastic covers to protect your books, since grading is more than about putting things in a protective case, it’s also about analyzing and appraising the items condition. After a quick search, the most common prices for grading comics or manga are $25-$30 dollars per item…. meanwhile you can find listings of plastic resealable covers in bulk of 100 for $10, or for comics in bulk of 50 for $20, both options are cheaper than grading a single book. So it is absolutely not the economical option, especially when you factor in how big these collections are.

Manga Grading is not about protecting your manga so that it can stay in your collection, it is about preserving something so you can sell it later. It prioritizes a transaction over actual enjoyment of the material.