That's what I use. https://keepa.com is essential for Amazon "deals".There's a Chrome plugin that puts a graph directly into the Amazon product listing. Much easier than camelFairly sure that marks lightning deals too.
I did end up grabbing an iPhone 8 as my SE's battery doesn't last a full day now (nail in the coffin was at the F1 when it died before Lewis came round for his victory lap), and some other bits and bobs that I'd been holding off on purchasing.
Fairly sure that marks lightning deals too.
