Consider three fictional offers covering the same eligible care with no binding payout cap in this illustration. All pay 80% of eligible charges remaining after an annual deductible. The only differences are premium and deductible. These are invented numbers, not quotes from any insurer.
| Fictional offer | Annual premium | Annual deductible |
|---|---|---|
| A | $420 | $500 |
| B | $588 | $250 |
| C | $660 | $250 |
Reducing the deductible from $500 to $250 makes at most $250 more expense eligible for the 80% payment. The greatest additional payment is therefore $200 in this one-term model. B costs $168 more than A, so its maximum net advantage is only $32. C costs $240 more than A and can add no more than $200 of payment; it leaves spending at least $40 higher under these assumptions.
C is also strictly worse than B in this model because the benefits are identical and C costs $72 more. That conclusion would fail if C included a different service, more usable payment terms or another material benefit. The phrase “same except” does important work.