Pay for the status page features you switch on
No tiers. Every capability is priced on its own, you pick the ones you want, and the total is what checkout charges.
Why it works this way
Tiered pricing makes you buy a bundle to reach one thing in it. The custom domain sits in the tier above yours, so you move up a plan and pay for four capabilities you will never open in order to get the one you came for.
Here each capability carries its own price and you assemble the set you want. The builder shows the running total as you add and remove, and that total is the amount checkout charges - there is no plan boundary to cross and nothing that unlocks only at the next tier.
Named plans still exist for people who would rather not assemble anything, and they are only ever a preselected set of the same capabilities at a discount. Picking one is a shortcut, never a different product.
What it costs
Those capabilities and everything they depend on come to $7/month.
Build the plan around it.
Add what you need, drop what you do not, and read the total before you buy.