UNDATED (CNN) -- Best Buy is launching a new price-matching guarantee.
Beginning March 3, Best Buy will match prices at all local retailers and nearly 20 major online competitors.
The chain wants to end so-called "showrooming."
That's when a customer goes into the store to check out the products, then buy it online for a cheaper price.
Best Buy has struggled recently, as discount and online retailers like Amazon lure away customers.