I once asked a Rav about the CDs that have written on them “Sold on the condition that you do not copy this CD”. He told me it’s not a good condition, and I could ignore it. He told me that were I to tell the store owner that I didn’t accept the condition, and wanted to buy the album without it, he’d most likely sell it to me. Furthermore, the store owner usually isn’t even aware it’s written there! The manufacturer who wrote the message sold it to the store owner. Therefore, you can make the argument that the condition applied to him. However, once the albums belong to the store owner, the condition no longer applies.
