I bought a Lifetime shed well over 10 years ago and recently needed to move it. While taking it apart, I found some cracks starting to appear in the bent parts of the roof ridge skylights. I emailed customer service to see if replacement skylights were available and how much they cost.
To my surprise they responded that altought the shed was out of warranty they would send me replacement skylights, free of charge.
Pretty amazing, considering age of shed.
I would also mention that the shed has held up very well and I live in S Louisiana with the strong sun, rain and frequent storms.