Subscription pricing is presented in three tiers far more often than any product genuinely divides into three. The arrangement is doing work on the comparison itself.
Prices are judged against each other
People are poor at judging whether a service is worth a given sum in isolation. Presented with alternatives, they judge relative value instead, which is far easier.
A single price forces the harder question. Three prices replace it with a comparison, and comparisons produce decisions rather than hesitation.
The provider therefore controls not just the price but the frame in which it is assessed, and the frame is built from the options placed beside it.
What the cheapest tier is for
The entry tier is usually built with a limitation that is easy to notice, such as a device cap, reduced quality or a missing feature most people use.
Its role is to establish a starting price and to make the next step look small. The gap in capability is designed to exceed the gap in price.
It also serves customers who genuinely want the minimum, and it keeps the headline figure in advertising as low as the provider can make it.
What the most expensive tier is for
The top tier is often priced well above the middle for additions a minority need, which makes it look like a specialist option rather than the natural choice.
Its presence changes how the middle reads. Against the top tier the middle appears restrained, and against the bottom tier it appears generous.
A small number of customers do buy it, and they are valuable, but the tier earns its place mainly by anchoring the upper end of the range.
Where the middle tier sits
The middle is usually closer in price to the entry plan and closer in features to the top one, so it collects most of the value with little of the cost.
It is frequently marked as recommended or most popular, which supplies a further reason to choose it without requiring any assessment of the features.
That combination is deliberate. The tier the provider wants to sell is made the path of least resistance in both price and presentation.
Reading the tiers usefully
The productive question is which specific limitations of the cheapest tier would actually bind, since that is the only comparison that reflects real use.
Working from features upwards resists the framing, because it starts from requirements rather than from the arrangement the provider has laid out.
Annual billing sits alongside all this as a separate lever, trading a discount for commitment, and it is usually offered most prominently on the tier being pushed.