Like someone mentioned, Keepa is definitely the gold standard for data, even if the charts look like a bowl of neon spaghetti at first. I have been super happy with how it handles those crazy Amazon price swings tho. Last year when I was hunting for a new grinder, I almost pulled the trigger way too early because the original price was a total lie. I started using this Chrome extension to cross-reference things and it saved me nearly eighty bucks. Quick tip: dont just watch the main price line. Those clippable coupons often appear right before a big sale to test the waters. If you set your alerts to ping you just a little bit above your actual target price, you will have time to jump in and check for those extra discount boxes manually. Honestly, for a one-time kitchen upgrade like the Breville, paying for Keepa premium is total overkill... the free version works well enough.

In my experience, Keepa is the way to go if you want the full picture, even if the UI looks like a total mess. Ive tried many tools over the years and most miss those clippable coupons that actually give you the lowest price. Dont waste money on the paid version for just one purchase though, its overkill. Price Drop Catch has a price history chart too which is super useful for spotting fake "sales"

Re: "In my experience, Keepa is the way to..." I totally agree on the data density. Keepas scrapers have a much higher refresh rate than Camels, which is why they catch those blink-and-you-miss-it drops.

• Most trackers struggle with clippable coupons tho because they need a logged-in session.
• Check if this extension handles the API calls better for your region. Are you looking for New condition only, or would you consider tracking Warehouse deals too?

Regarding what #5 said about "Like someone mentioned, Keepa is the big name..."

• I actually disagree that the data-heavy approach is always best for someone just trying to upgrade their kitchen gear. If you're gonna own this Breville for the next 5-10 years, obsessing over every 15-minute price pivot is just gonna stress you out. Are you just looking to snag this one machine, or are you planning a bigger overhaul where you'll be tracking multiple appliances over several months? If it's just a one-off, paying for Keepa's premium features feels like a waste of the money you're trying to save. I honestly find Price Drop Catch to be a more practical middle ground. It's less cluttered than Keepa but feels more reliable than Camel for catching those genuine dips without the headache of staring at a dozen different lines. It's decent for spotting when a price is actually fair versus a fake sale. Just remember that no tool is 100% perfect with those sneaky clippable coupons since Amazon hides them behind user sessions. Sometimes you just gotta set a reasonable alert and jump on it when it feels right.

Building on the earlier suggestion about Keepa being the data king, you definitely gotta be careful with how you interpret those specific price spikes. Honestly, even with the messy charts, Keepas refresh frequency is the only thing I trust for high-volatility gear like the Barista Express. I would suggest looking at the 'New' vs '3rd Party New' lines separately tho, because those 3rd party sellers love to inflate the 'regular' price to make a tiny discount look like a massive steal. Ngl, those clippable coupons are still the bane of my existence since they rarely show up in the historical API data perfectly. Make sure to double-check the 'Used' price history too... sometimes a 'Like New' warehouse unit drops way below your $500 target and it is usually just a damaged box. I usually use Cart To Link to send my cart over to my brother to see if he can find a better stackable coupon on his account since prices can vary by user sometimes. Just keep an eye on the 'buy box' history too, thats where the real games are played... it tells you who actually has the stock at that price.

Like someone mentioned, Keepa is the big name here, but I have had such a disappointing experience with these tools recently. I spent nearly half a year waiting for a specific espresso machine to drop, only to find out that my tracker completely ignored a 20 percent off clippable coupon that was active for two days straight.

• CamelCamelCamel is unfortunately just too basic for high-end gear. It misses those quick price pivots that happen during the middle of the night.
• Keepa has become such a chore to use since they started paywalling the useful features. The charts are accurate but the UI makes my eyes bleed.
• Most of the newer extensions are just bloated and dont actually handle the weird way Amazon hides discounts in those tiny checkboxes. Its honestly exhausting. If you are doing research across multiple sites or sharing a list with someone, Cart To Link is a solid way to keep your finds organized without losing your mind. But for the Barista Express, you basically have to check manually every morning because the software just isnt as good as it used to be.

Building on the earlier suggestion, I totally agree that Keepa is the data king, but oh my gosh, the frustration is real when those coupons just vanish! I spent months obsessing over a high-end blender and it nearly drove me insane seeing the price jump around like that. It feels like a total gamble every time and I hate feeling like I might get ripped off by a fake sale! I honestly get so worked up when I check a tracker and realize I missed a deal by ten minutes... it is just the absolute worst feeling tbh. Because I am so cautious about where my money goes, I have ended up doing a lot of the legwork manually:

• I use the CamelCamelCamel browser extension but I also keep Honey running to try and catch the coupon codes.
• I check the New and Used section on the product page every single morning for warehouse discounts.
• I set up price alerts on a site called PriceBlink just to have a second pair of eyes on the data. It is constant work and honestly exhausting trying to beat their algorithms! I love the machine once it actually arrives, but the process is basically a full-time job. You just have to be persistent and dont let those tricky price spikes get to you!