Any reputable installer will not leave you with a pool that's over an inch out of level--they WILL level the site, add sand for the floor and do their best to ensure the liner is wrinkle-free. Usually the electrics requires burying a line from the house, which must be on a GFIC breaker--usually requiring an electrician. The metal frame needs to be banded which means grounded.

You probably need an electrical permit too, and you may need a building permit. If your town requires a building permit and you don't have one, your insurance will NOT cover you for pool accidents.

If these guys are good and cover all this for you, here in north central NJ, that would be a BARGAIN for $850.

It's not the same as a do-it-yourself Intex.