So I just started using ebay because I'm trying to find this specific vintage Casio watch for my brothers 30th birthday next month. My budget is strictly 50 bucks but all the ones I see right now are like 60 or 75 dollars which is more than I can spend. I saw that little button that says watch and I clicked it on a few of them but I'm actually so confused about what that even does lol. Like if the seller decides to lower the price to 45 or something am I gonna get an email right away or a notification on my phone??

My logic was that it might work like a sale alert or something but I honestly have no idea where to start with this and I dont want to miss out if someone drops the price while I'm sleeping. I keep logging in every few hours to check manually which is kinda exhausting to be honest. Sorry if this is a really dumb question but is there a setting I need to turn on for this? Or does it just happen automatically? I tried looking in the settings but there are so many menus and it's all a bit overwhelming for me for just a simple birthday gift...