amazon store cost varies depending on the type of seller account and fulfillment method chosen. Individual seller accounts have no monthly fee but incur per-item charges, while professional accounts charge a flat monthly fee with lower variable costs. Additional expenses may include referral fees, FBA fulfillment charges, advertising budgets, and optional services like enhanced brand content. Understanding the total store cost is essential for accurate financial planning and profit forecasting. Sellers should regularly evaluate these expenses to ensure they align with revenue goals.