In delta’s case that is correct. There are two left at that price (in that fare bucket). After they sell those seats, they will be selling from a higher fare bucket and the price will go up
Maybe but the pricing charts I've seen show fairs rising and falling.
That may be the case at the moment but if they shift those buckets I think it is also untrue unless it says 2 left.... unless we just change the price later.
buckets (a.k.a. fare classes) can change in price. Also, some airlines will not sell certain fare classes on certain days or release all of the fare class seats at once.
The airline definitely isn’t lying when they say there are a certain amount left at that price. I’ve seen the price change at those exact amounts when booking tickets for groups of people individually.
For airlines that's probably true. I fly United quite a bit and they have an expert mode where you can choose specific fare classes. Even within "deep discount coach" there are different pricing tiers like K, L, G, S, or T. That doesn't include "discount coach" or award booking or business or full fare coach.
The only potentially troubling aspect is that they don't tell you how much more expensive the next pricing tier will be.
If this was something that was merchant-fulfilled (not shipped by Amazon), 3rd-party sellers can use one of Amazon’s API to perpetually keep 3 (or however many) items in stock no matter how many they have on hand.
There’s lots of hocus-pocus beliefs out there about the “optimal” number.
Also I was buying airline tickets and Delta told me there were just 2 left at this price for ... a plane nearly 70% empty.