Having bought many games on ebay I have been dismayed by the difference between the described condition, and the 'actual' condition. I always describe accurately, and tilt the disc in natural light to check it, I would advise anyone to do this as it shows marks on the disc often not seen in artificial light! Hence 'Mint' becomes near mint etc!!!!
A cracked case is NOT 'excellent condition'
I advise buyers to ask the sellers if condition is vague or not listed or feedback is poor.
Then make sure you get an accurate description!