Earlier quoted context omitted.
But price matching is predicated on realistic economic competition, not we'll-match-it-no-matter-what-based-on-principle. There are already exceptions based on only dealing with "major online retailers" – i.e. retailers that operate on making stable revenue/profit from selling things – as well as disqualifying certain kind of discounts, like clearances and Black Friday prices. And in any case, Best Buy's qualifying r…
One of the things they "fixed" was requiring it to be sold by Amazon or Fulfilled By Amazon. A few years ago there was a little racket in creating an Amazon seller account, "selling" things at stupid discounts (which you neither had nor intended to fulfill), go into Best Buy and say "Look, half that price on Amazon, match it!".
As of the last time I heard their policy (within a couple of years, from floor/cash register staff), Fulfilled By Amazon doesn't cut it -- they will price match only if Amazon is the vendor.