The Best Buy here is at least decent about it

They don't have an in-store kiosk, but whenever I've told the cashier that the website price was $10 lower they've always been good about just accepting that. They also realize how ludicrous it is that if you were to buy something online for instant pickup you'd get a lower price than if you were to come in and browse for a while. You'd think they'd want to encourage browsing.