Google chrome extension price tracker

I want a chrome extension price tracker for nbatopshot.com. I want it to notify me if the price of an item (in this case a token) goes down by X% or goes below a certain $ amount (I want both options) but both do not have to be filled out. When I visit the site and choose a moment (or item) for example; https://www.nbatopshot.com/listings/p2p/208ae30a-a4fe-42d4-9e51-e6fd1ad2a7a9+d240a57b-01ed-4462-a35b-94d8cb1eec2a I want to be able to click the chrome extension and set conditions for when the price of this item drops, lets say 10% or it drops under $2,000, send me an email. This can be tracked by if the lowest price decreases by 10% or a new low price is under the inputted threshold. Thanks. I need this to be done asap.