We got our 18x36 inground vinyl pool for around $17,000. We purchased the pool "kit" (which included everything needed to install pool, pump, salt generator, creepy crawly, vacuum, skimmer net, diving board, ladder, walk out stairs, spill over spa). We had a freelance guy install it, which included the dig, 3 foot concrete deck plus a 20x30 patio. This was about 3 or 4 years ago. It may have taken a little bit longer than having a pool company do the entire thing, but not a lot longer - perhaps a week. I would highly recommend a salt water pool - far less maintenance and it's so much easier on bathing suits, skin, etc.