I'm looking at buying a used doughboy pool, but I don't have any idea how old it is, or what model line/quality it is... Can someone give me any advice as to how to identify the pool?

It's a 16x30 oval with buttresses. I believe it is 48" tall, but it's possible it could be 52"... the rails are steel painted blue, and the walls are blue with a wood-grain looking texture.

I'm guessing the pool is approximately 7-10 years old, but I don't know anything about it's history, so I could be way off.

Also, any thoughts about the value of this pool and what's a fair price for it?