When shopping on Amazon, if I don't need something right away, I put it in my cart and then save it for later. I check my cart on a regular basis. Prices on Amazon swing wildly on some things.
Prime example: We have been watching this
Screened Canopy for a long time on Amazon. Right now it is $162 and has been for months but, it is a little more than we want to pay for it. The cheapest we have seen it is $129, the most we've seen it is $360.
When you leave something saved for later and return to your cart, if the price has changed, Amazon will indicate that it changed at the top of the shopping cart. I have about a dozen items I keep track of, my wife has 100s of things she keeps track of.
Amazon usually has good prices, but they do vary and there are plenty of times when I can find something cheaper else where.
-Michael