Anti-Aging Treatment ROI Calculator

At-Home Break-Even Years divides Professional Total Cost by the at-home annual spend -- At-Home Monthly Cost times twelve -- and never reads At-Home Treatment Years (lines 11-12 for the annual figure, lines 27-28 for the break-even division). Changing how many years you plan to use at-home products moves At-Home Total Cost but leaves the break-even figure unchanged, because that output compares one professional lump sum against a single year of at-home spending.

No. Both totals are built purely from dollar inputs and duration -- session cost, session frequency, and treatment years for the professional track (lines 7-8), monthly cost and years for the at-home track (lines 11-12). Effectiveness scores are floored at 1 and used only when dividing each total to produce the dollars-per-effectiveness-point figures and to decide Better Value (lines 15-18, 22).

Better Value ignores raw totals and compares effectiveness-adjusted cost instead. Each track's total is divided by its floored effectiveness rating (lines 15-18), and whichever side produces the lower dollars-per-point figure is labeled the winner (line 22). A more expensive professional plan can still win if its effectiveness score is high enough to pull its per-point cost below the at-home alternative.

Both effectiveness inputs are floored at 1 before any division, so entering zero behaves the same as entering 1 for the per-point math (lines 15-16). That prevents a divide-by-zero on Professional $/Effectiveness Point and At-Home $/Effectiveness Point while still letting you express a low-confidence rating without breaking the comparison.