Omg I suddenly thought of 2 more incidences! (I have so much experience with CDs HAAHA)
One was when I bought Ai Otsuka's Ai am Best from a local store which looked perfectly alright in the wrapper. But the moment I took off the wrapper, the plastic at the bottom shattered into 3 pieces!!! But I was patient enough to use super glue and glue back the pieces and now it's working normally like a normal case HAHA.
Another was when I bought Ayu's MY STORY from a local seller and when he mailed it to me, he didn't wrap the CD with bubble wrap! Wtf! And therefore the case was cracked, the obi wasn't in a very good condition and best still, the CD is corrupted
(As in when playing a track, the track starts to skip... if you know what I mean)