My neighbor has a pool that is 30 years old. It is a fiberglass wall/concrete bottom pool. He has had very little problems with this pool. I am now thinking of installing a pool and am impressed with how well his has held up. I have searched all over and find very little info on this type of pool. All I see is people spending 4k to replace liners a etc. or a 1 piece fiberglass tub. Is there anyone with info on this type of hybrid pool? do they still make them? Any advice of info would be appreciated.

Thanks