Refill vs rebuy: yearly household cost comparison
Compare starter bottles, refill packs and leftover volume using your consumption and prices.
Compare starter bottles, refill packs and leftover volume using your consumption and prices.
Assumes the same purpose and equivalent usage amounts. Concentrates with different doses cannot be compared by volume alone; enter your usage. Check container compatibility and manufacturer refill instructions. Months×52÷12 weeks; bottles and packs round up. No environmental-impact calculation.
Cash costs for everyday services and household goods only. Excludes financial prepaid balances, cards, investments, securities, loans and insurance. No purchase or contract recommendation. Enter all prices in the same currency; no conversion. Defaults are editable examples.
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Method
Volume needed for period (ml) = Usage per visit (ml) × Uses per week × Comparison months × 52 ÷ 12; Bottles needed = ceil(Volume needed for period (ml) ÷ Bottle volume (ml)); Saving (rebuy minus refill) = Rebuy total − Refill strategy total.
Assumes the same purpose and equivalent usage amounts. Concentrates with different doses cannot be compared by volume alone; enter your usage. Check container compatibility and manufacturer refill instructions. Months×52÷12 weeks; bottles and packs round up. No environmental-impact calculation.