Stock up on VHS VCRs when can

[Combwork]

Can anyone tell me how long pre-recorded tapes are good for? I was wondering if the signal would fade away in storage. I hope not; I've a wonderful old VCC (video compact cassette) machine that still works plus a few brilliantly un-PC cartoon tapes that I doubt will ever be broadcast again. I don't know if this format made much headway outside Europe; tape cartridges were only slightly larger than VHS but played both ways like an audio cassette. Definition was better than either VHS or Betamax but being late to market, VCC never really caught on.