Yes, I agree with MrED, because they won't last long, in fact not even a year. My suggestion is to opt for a small concrete pool instead. Though it costa more, at least you will able to use itt for a long time.
What do you mean pool at walmart? You mean the air inflated type? Will you can expect a very limited activities with that materials, just like when I made bathroom renovations blacktown, they bought a large air inflted pool, well after few days of everyday usage, it just went flat.
I agree with Behl, swimming polls are investment in a house or any other buildings, this will surely raise up the value of each building as soon as the pool is well built, I know a Glass Pool Fencing Perth that is well built and elegant enoough that the main value of the entire house has been elevated up to 25% higher, now that's what you call a good investment.
Also do not forget that cleaning the pool tiles is as important as keeping the water clean. Accidents happen from tiles that are not cleaned regularly, molds appear in between grouts and can cause a slippery surface. Keeping tile cleaning perth every weekends can save you from hassle.