Ugh I'm so frustrated right now. I've been trying to buy this specific Ninja blender for my mom's birthday next month but every time I check the price it changes. Yesterday it was on sale and today it's forty dollars more? I can't stay on my laptop all day refreshing the page I have work to do. Someone mentioned I should get a price tracker extension but I have no idea what that even means really. Are they like apps you put in the browser? Sorry if this is a dumb question but I'm totally new to this stuff and I'm worried about downloading something that's gonna break my computer or steal my data.

I really need something that fits these things:

• has to be 100% free because I'm on a super tight budget with my new job
• works on Chrome but maybe Firefox too if that's better
• needs to be really simple to set up because I get confused easily with tech
• it has to actually alert me when the price goes down so I don't miss it again

Does anyone know a good one that isn't a scam? I just want to get my mom a nice gift without overpaying but I feel like I'm drowning in all these options and don't know where to start...