Grest offers certified premium refurbished smartphones, laptops, and Apple devices with 50+ quality checks, 12-month warranty, and eco-friendly impact tracking. Gurugram-based platform emphasizes data security, EMIs, and pan-India shipping, achieving 10x YoY revenue growth to $5M ARR and 2L+ customers. Media highlights its sustainability metrics like CO2 savings. Stage: Seed (₹16 Cr from Equentis, others).