Wouldn't you know it. I've been accumulating parts (tanks, switching regulator, hose and wire) for a whole-house generator. I bought two 100lb tanks at a really good price off Amazon a few months ago. I see the tanks have about doubled in price. I don't have them full yet as I don't have the generator. I was about to spring for the generator after I got the tanks but Amazon has been playing the pricing game on my "Shopping Lists" so I put that off as well as a few other purchases.
I actually had the generator in my Cart for a few days then they added over $200 to it. After that, I moved it to "Save for Later". The price came back down so I moved it to my cart again. A couple of days later, I was going to pull the trigger and it said the generator was no longer available. I just deleted it then.
I guess I'll wait. The 13-22Kw generators have been bouncing all over the place in price since the big freeze down here. Some of the well known names have a 6-month waiting list.