I really need some help and I feel kinda stupid for asking this but I have no idea how people actually know if a sale is real or not. My parents are having their 30th anniversary next Thursday and I really want to get them this high-end espresso machine theyve been eyeing for literally years but it is so expensive and I see it on Amazon right now for like 20% off but I heard that companies sometimes just raise the price the week before and then drop it back to normal and call it a sale and I really dont want to get ripped off because I only have about 600 dollars saved up for this and that is a huge amount of money for me.

I heard there are these things called Chrome extensions that can show you a graph of what the price was like last month or last year but I am so tech-illiterate I dont even know where to start looking or how to even install them properly. Are they even safe?? I dont want to download something that is going to give my computer a virus or steal my credit card info when I try to buy the gift.

Here is what I am looking for if anyone knows anything that fits:

• It has to be totally free because like I said my budget is super tight and I cant pay for a subscription
• I need it to be super easy to understand like just show me a simple line graph or something without a million buttons
• Does it work automatically on the page? Or do I have to go to a different website?
• I am specifically looking at Amazon but maybe other stores too if possible
• Needs to be reliable because I need to buy this thing by Monday at the latest so it gets here in time for the party

I saw one called Camel or something like that but the website looked really old and it kind of scared me off honestly. Is that one okay or is there something better for someone who has never done this before and is kinda panicking? I just dont want to waste my savings on a fake discount. Sorry if this is a really basic thing everyone already knows... I just feel really overwhelmed trying to figure it out on my own...