Price tracking chart

Would anyone know of a good way to track and display an ongoing price tracking graph? I’m picturing something like the price graph on Google Flights. Ideally myself or a user could input a couple of details and have the graph get updated with a new entry.

It’d mostly just be for personal use among myself and a small group of people. I have G Sheet already, so that’d probably be a good start but curious if there are any other ideas?

Haven’t got it but heard good things about https://shakingthehabitual.com/stacks/charter/

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