The cost of installing an in-ground pool seems awfully high. Here is an example, this 16X32 - 8' deep vinyl pool with steps, ladder and decking installed in 1978 in Pensacola was $4,900. Just for information, that region of Florida only uses fences and no birdcages. I sold the home in 1979 for $77,000.
I recently looked up the address on zillow and found the home sold in 2012 for $212,000 and here's a photo of the pool at that time. Still going strong after 40 years.