Dynous inflatable question

[slowneasy]

I have the opportunity to purchase a dynous ND-108. It is a 1992 model. The price is right and it appears to be in excellent condition. That being said it's a 30+ yr old boat. What is the life expectancy for a hypalon Inflatable like this.

 

[airshot]

30 yr old inflatable, the only great price would be free. Years back I was told their life expectancy was around 15 years. If this boat was never used and still holds air, it might be worth a few bucks but not much....it is gonna go poof shortly.