The 8-track tapes are 40 - 50 years old and may have had a few repairs in their life.
I will always ship a working tape, well packed. However due to the nature of the product that is sell i can't 100% guarantee the product will be working immediately after it's being shipped.
I advise that you only buy tapes if you have some knowledge about 8-track repair. And accept the fact that some tapes get disfuctional after shipping. This can happen when tapes are shipped upside down and/ or are handeled roughly.
Fortunately this can be fixed if you know how. This does not mean the tape is broken.