¿Cuál de los siguientes factores debe considerar un vendedor al seleccionar un plan de ventas de Amazon.com?

The number of products a seller estimates to sell per month is a crucial factor because Amazon offers different selling plans (Individual and Professional) with distinct fee structures. The Individual plan charges a per-item fee, making it more cost-effective for sellers with low sales volumes (typically fewer than 40 items per month). The Professional plan has a flat monthly subscription fee, which becomes more economical for sellers exceeding that threshold. Therefore, estimating monthly sales directly dictates which plan will minimize selling costs. Product category is less relevant to plan selection as both plans accommodate most categories. The number of countries is also not a primary factor for choosing between Amazon.com's Individual and Professional plans, as these plans are specific to the US marketplace.