I would love to see the behind-the-scenes numbers crunched on that model. I don't see how that model works long-term unless the percentage of customers in the showroom walking out the door with online price-matched goods is a relatively small group, or they're successful up- and cross-selling on gonzo margin goods and services before and after they walk out the door, or their COGS is way better, or some other activity to make up their bigger overheads versus an e-commerce marketplace.

Can anyone offer any insight how BestBuy is long-term sustainable with the online price matching policy?

Long term sustainable simply because they've already baked it in and it's less widely known amongst the typical consumer and its honestly kind of a hassle, people pay for convenience.

And for many of their products they all sell at MSRP anyway (apple laptops say) so they’re already matching Amazon et Al. And things like hdmi cables are some off brand and so they don’t price match anyway.

They have a pretty slick setup going, also jumped in on the appliances market just as Sears et Al disappeared.

I've bought more from Best Buy in the past few years than I have in the decade before because they are often the cheapest option, including Amazon. They also offer same-day courier service on some things I've ordered.