Everyone has different tastes, goals, and budgets when it comes to building a swimming pool. As far as composite/fiberglass price comparison with other types . How much does a fiberglass pool cost? What's the price of a fiberglass pool? This, of course, is always one of the first questions a pool shopper has when . Jun 17, 2009 - For a professional to fully install this, it would normally cost anywhere from 8k–3k in our area. A DIY installation of the same fiberglass pool . Jan 29, 2014 - Thinking about buying a fiberglass pool? . on the quality of the materials used to build the pools and how much material goes into the pool. Prices range from 3,967 (12' x 24' in-ground fiberglass pool - DIY) to 3,657 (12' x 24' in-ground fiberglass pool - upgraded) and also vary depending on .