The reasons can be varied and can be multiple and include: color, engraving gone wrong, labeling done wrong, surface skuffs/dings, pin distances less then 1" from Pin to CG and pin distance greater then 5.5" from Pin to CG.
[H020] New NIB Roto Grip X-Cell Bowling Ball | 1st Quality 14lb
Roto Grip Hustle Wine Bowling Ball 1st Quality | 15 Pounds | 3-4" Pin | No Box
Roto Grip Hustle USA Bowling Ball 1st Quality | 16 Pounds | 3-3.5" Pin 3.7ozTW
CLONE 🛸ROTO GRIP Reactive Solid 🎳 Bowling Ball 1st Quality 15 lb New In Box🎁
Roto Grip Optimum Idol Bowling Ball 1st Quality | 15 Pounds | 2.5-3" Pin
Roto Grip Rubicon UC2 Bowling Ball 1st Quality | 15 Pounds | 3.5-4" Pin 3.48ozTW