I’d model both. Leasing a /24 from about €89 a month comes to roughly €3,200 over three years at IPv4.online’s starting price, while buying means paying the market price plus transfer-related costs. The marketplace offers a free consultation to decide which route makes sense, and escrow for bigger deals. Ask for a fee schedule before buying IPv4, and include transfer times in your plan. Leasing wins when you’re unsure about future needs. Include opportunity cost: cash tied up in a purchase can’t fund hardware. I’d ask the marketplace to quote both options in writing and compare them over thirty-six months. Compare at thirty-six months, not at month one.