Stop Rebuilding UI

Billing Custom Amount

A flexible manual payment entry block for React and Next.js with real-time validation, price-per-unit calculations, and animated totals built with shadcn/ui and Tailwind CSS.

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Allow users to define their own spend with this professional custom amount entry block. Features a clean numeric input, rapid-selection presets, and smooth NumberFlow-animated total calculations. Built with TypeScript, shadcn/ui Input and Button components, Lucide icons, and Tailwind CSS. Perfect for credit top-ups, donation platforms, and volume-based enterprise billing.

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Last updated on May 24, 2026

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