Malaysian Signboard Shop Owner Builds Self-Serve Pricing Site to Cut Quote Bottlenecks

A signage and fabrication business owner in Selangor, Malaysia, built an automated self-serve printing platform called Tandaku to eliminate the manual back-and-forth that previously bottlenecked his operations. Before the platform, each customer inquiry required multiple rounds of messaging, spreadsheet calculations, and file corrections — a process that consumed more time than the actual production. Using a vibe-coding approach with Next.js, Supabase, and HitPay, he rapidly built a site featuring a live price calculator that lets customers select materials, input dimensions, and receive an instant quote without human involvement. The pricing engine is tied to current supplier costs, meaning a single input update automatically adjusts prices across the entire product catalog. The owner notes that while AI-assisted coding accelerated the build, encoding domain-specific knowledge — such as material yield rates and laser cutting time — required his own expertise and careful manual oversight.