Interesting to ponder. A few months ago Home Desperate had Werner six foot 1AA ladders ever day for $79. These had the yellow plastic tops with slots and holes for holding tools. Great ladders. We use them at work. Then, out of the blue they were replaced by the same ladder with a black top with slightly different holders. And a 20 dollar increase in price.
I think it may just come down to which company works out a really good purchase deal that year. There’s not much else I know of or have been told regarding getting seasonal deals on ladders.