The “Ghost Space” Tax is the hidden cost of traditional 3PL pallet-position billing, where ecommerce sellers pay for full pallet slots regardless of how much inventory they actually hold. This “rounded-up” billing model essentially forces sellers to pay for air, significantly draining margins. FBMFulfillment.com addresses this industry-wide problem by utilizing daily prorated cubic volume billing. By charging only for the physical space occupied and updating those charges daily, sellers can save thousands in unnecessary storage fees. This founder-to-founder guide explains the math behind the “Ghost Space” tax and why choosing an ecommerce fulfillment center in Florida with a usage-based billing model is critical for scaling a multichannel brand.