Back In Stock,Notify Me: Kbite

if youre looking for a back in stock notification app - this one is the best value for money!
has a free plan that is enough to test it out properly, and the next step up in payment is the cheapest option of all the other apps. great functionality too, and the ability to significantly customise the buttons and text.

plus their app support is with real people not an ai chat bot.

highly recommend!