What is the best tool for getting Walmart price drop notifications that actually works? I am honestly so fed up with the built-in alerts and this one chrome extension I used to have that just misses everything and it is wasting so much of my time.

Im trying to track this specific 55 inch Vizio for my brothers birthday next month and the price keeps bouncing around but I never get the alert until its already sold out or back up to $450. I really need to stay under $350 for this gift and its driving me crazy checking the tab every hour while I'm at work here in Chicago. Is there something reliable that actually pings your phone? everything I try lately is just laggy garbage...