When I think back to the old VHS videos there was a significant difference in the quality of the tape used in rental VHS products compared to retails ones.
I have never noticed such a difference between rental and retail DVD’s.
I have never had this problem before when purchasing ex-rental DVD’s and so I have never thought about it. However, recent attempts to purchase ex-rental DVD’s in South Korea has seen the store owners asking for more money than the normal retail price claiming the DVD is of a superior quality and was more expensive for them to purchase initially.
Ideas/thoughts welcome – Thanks!