You're probably imagining two black coffees, and all three drinks being of modest size like medium.
But if you turn those into "specialty" coffees and upsize them, and then add ~10% sales tax, it's very plausible that the price was closer to $20 than $10.
Between prices inflating and people's tastes being pretty unmoderated and indulgent for a long while now, the total cost of "everyday" expenses adds up quick.
Even the simple black drip coffee drinks that have basically no material or labor cost are priced at $2-4 in a lot of places now because people have become so dependent on the habit of treating themselves to one, and often a very large one, that they've become price insensitive and easily exploited by any coldly calculating business.
> black drip coffee drinks that have basically no material or labor cost
Raw coffee prices have been rising for a while now[0], and I assume even in the US people are more attuned to decent coffee.
And I kinda hope producing countries get enough power to get better deals (thus increasing coffee prices further...) as they're usually getting shafted pretty hard.
> if you turn those into "specialty" coffees and upsize them, and then add ~10% sales tax
Right off the bat, it's McDonalds, there are no "specialty" coffees. And the sales tax is irrelevant, what matters is what comes out of the pocket.
$20 for McD-quality coffees and soda is insanely expensive. It puts it above places like Starbucks which makes no sense because there's a Starbucks literally 50m/150ft away from that very same McD.
Pictures of the menu at the closest McDonald’s to MacArthur Park show the coffees at ~$4 and sodas at ~$2-3 all large, which is a more realistic number but still only around half the quoted amount.
Of course there are "specialty" coffees at many McDonald's. Well over a decade ago, recognizing the margin and admitting the public interest in sweet, creamy, coffee drinks, they began a shift into direct competition with Starbucks, et al and offer a full menu of Americanized espresso and blended coffee drinks. Like at Starbucks, these easily run over $5 for the large sizes, and they're widely available.
Because of both brand loyalty, or because they also want other things from McDonald's that Starbucks don't carry, it's a extremely successful and profitable product segment for them, even when a Starbucks is "literally 50m/150ft away".
I visited London last year and was surprised & disappointed that the McDonalds across from the Trocadero did not have any such thing as simple black drip coffee (to which I could add half-and-half). The closest I could come was "flat white", which I never heard of before in the U.S.
But if you turn those into "specialty" coffees and upsize them, and then add ~10% sales tax, it's very plausible that the price was closer to $20 than $10.
Between prices inflating and people's tastes being pretty unmoderated and indulgent for a long while now, the total cost of "everyday" expenses adds up quick.
Even the simple black drip coffee drinks that have basically no material or labor cost are priced at $2-4 in a lot of places now because people have become so dependent on the habit of treating themselves to one, and often a very large one, that they've become price insensitive and easily exploited by any coldly calculating business.