Refill Calculator

Install

Or by hand, in a Next.js project with shadcn set up. It writes components/pastetaste/refill-calculator.tsx.

Install the pastetaste component "Refill Calculator" (refill-calculator) into this Next.js project and use it.

What it is: A savings calculator for refills or subscriptions: pick a product and a delivery interval and the yearly saving, monthly spend and packaging avoided count to their values.

Before you place it, ask me (one short message, in my language; "skip" = sensible default): which page and section it goes in, my brand colour (hex), the text, labels or images it should show, and whether I want my logo or my own copy in the demo content. Then:

Steps:
1. If the project has no components.json, run: npx shadcn@latest init -y -d. Then run: npx shadcn@latest add https://pastetaste.com/r/refill-calculator.json
   (it writes components/pastetaste/refill-calculator.tsx; install any npm packages it reports).
2. Import it: import { RefillCalculator } from "@/components/pastetaste/refill-calculator" (check the file for the exact named export).
3. Put it where it fits on the page I name, keep the rest of the page untouched, and pass props for my colours instead of editing the installed file.
4. It does not depend on Tailwind; colours come from CSS variables (--pt-*) or props.
5. It supports prefers-reduced-motion with a still state; do not remove it.

Props (all optional unless the type has no default):
- options: RefillOption[] = 4 sample products — { id, name, singlePrice, singleSize, refillPrice, refillSize, grams } per product.
- intervals: number[] = [4, 8, 12] — Delivery gaps in weeks.
- currency / unit: string = '€' / 'ml' — Symbol and size unit.
- title / cta: string = 'How much would you save?' / 'Start refill' — Heading and button label.
- onStart: (option, weeks)=>void — Called by the button.
- className / style: string / CSSProperties — On the root.

Live preview: https://pastetaste.com/c/refill-calculator
Then run the dev server, check it in the browser at desktop and mobile width, and tell me the page URL.

Props 6