http://www.mademan.com/wallstreetfighter/2008/06/worlds-largest-and-most-expensive-pool.html has info but 2 billion dollars to build and 4 million a year to up keep and is 20 acres
Not very expensive and they can add to the appearance oif your pool. They are under $100 usually, and can go up from there.
Very expensive
A 5ft pool would be VERY expensive. By that I mean in the thousands of dollars... Walmart.com does have a 4.5ft pool for just under $700.00. That is going to be the most reasonable choice.
Expensive. The dig is probably one of the least expensive parts of the inground pool process. Essentially when you pull the vynal out that is what you have. a hole. You can plan to have the gunite shot in, replumbing, coping and decking. Then the diamon brite plaster is shot at the end. In most markets you can count on approximate costs of over $20,000.
749 ft deep
Cement!
the worlds largest pool
Well, it depends on how big the pool is and how expensive your home is.
It depends on what type of home solar generator you are looking to purchase. If you want it to heat a pool, it won't be very expensive. For heating a home, it can vary depending on the make.
You haven't provided enough information - what are the units of measurement (24 whats, feet, metres) and how deep is the pool...?
Gunite
Very expensive.