All Weather Pools & Swim Spas, Anthony Sylvan Pools, Blue Hawaiian Fiberglass Pools, Blue Haven Pools & Spas, Galliano Swimming Pool Spa, Kafko Pools, National Pool Wholesalers, Pacific Pools, San Juan Pools, SwimEx Swim Spas & Pools, TidalFit Exercise Pools, Trilogy Pools, Under The Sun Distribution, and Viking Pools are some of the certified swimming pool companies. You need the best quality of inground swimming pools for sale, so you have to choose the best manufacturer. The swimming pool type is also very important. Vinyl lined pools are the cheapest option, concrete or gunite pools are more expensive than vinyl pools, and fiberglass pools are the most expensive but require less maintenance than other pools. Share your tips and thoughts on the comments section.