All discs are checked to be in perfect working condition before they are shipped, but in the unlikely event that any disc is damaged during shipping or not functioning properly, you may return the faulty disc(s) and I will replace them for free. Due to the nature of these discs (in that they can be copied relatively easily) and the fact that the price you pay is for time and materials, I do not issue refunds, only replacements.
If you do have any problems with the discs or need a replacement, I'm always available to help out and answer any questions you may have.