I am in the process of putting together my first pool. I have been pricing the major items for a while and found Amazon has dropped the price of the Hayward S180T Pro Series 18" Top Mount Sand Filter to $78 shipped with prime.
From what I have seen this is close to $100 cheaper then anyone else. I expect they are moving out inventory due to off season. I joined today to post this hoping it would help someone else.
In July/August I bought the "Hayward SP15922S Power-Flo Matrix Above-Ground Pump 2-Speed 1 HP" from Amazon also and got that one for $165 delivered. I regret not posting that here at the time now. Shortly after I bought it they jacked the price up to over double what I paid. They can have some really crazy prices on this stuff when they are closing out inventory it seems.
Direct link to the filter:
If this is not an appropriate post, I apologize. Have been lurking on here a while looking at other peoples installs and how to do stuff.