Been thinking about this since I saw your post earlier. I'm usually pretty cautious with my money, so I get why those broken charts are making you nervous. Last year I was trying to buy a high-end stand mixer and ran into the exact same thing where the history just looked like a bunch of random dots. I ended up feeling much more satisfied after I started cross-referencing everything manually. What works well for me is using a Price tracker extension to get the basic idea, but then I go a step further and look up the product on sites like specialized kitchen shops or even the official Gaggia site. It sounds like a lot of work but honestly it gives me so much peace of mind. For that mixer, I found out the sale price on Amazon was actually just the standard retail price everywhere else. I'm very happy I didn't just jump on it. Another trick I use is checking the New and Used section to see if other sellers have a more consistent price history. If the main listing is new, the seller might have just changed the ASIN to hide bad reviews or price hikes. I always feel safer buying when I can see at least six months of steady data... if it's not there, I usually just wait it out or buy from a shop I trust more even if it costs a tiny bit extra.

I just saw this and honestly I've been dealing with the exact same problem for the last two months on a different espresso machine. It's so frustrating because I'm usually very satisfied with my tracking tools and they work well for everything else, but these fragmented charts are driving me nuts lately. I've been doing this for years and still haven't found a way around it when the seller wipes the slate clean like that. My situation is basically identical:

• Chart data looks like Swiss cheese with huge gaps
• Old low prices aren't showing up anymore
• Every time I think I found the bottom, the listing changes I've been looking at PriceDropCatch to see if I can cross-reference anything, but so far no luck on my end either. Just to be sure, are you looking at the main listing or did you find this through a sponsored link? Sometimes that messes with the history data too.

I had a similar headache with a Breville last year where the history just vanished. Unfortunately, those fragmented charts usually mean the seller is playing games. Keepa was a letdown, so I mostly use CamelCamelCamel now. Are you looking for a brand new unit from Amazon specifically, or would you consider a warehouse deal? Is it the classic or the deluxe machine?