This isn’t something I know how to create, so tossing the idea out for those who might know how to implement it.
The bot would detect Amazon links here and automatically create a comment in the post with a ca.camelcamelcamel.com link for the product.
This would let readers easily check the price history of the product to know if the current sale is a good one.
The same (or a different bot) could also link to fakespot (or some other review checker) for the product.
Yeah, that’s a valuable, useful, positive bot.