Hey there! Navigating Amazon's FBA fees can feel like piecing together a puzzle, but it's pretty straightforward once you get the hang of it. Let's break it down together.

Fulfillment Fees: Consider these as the costs Amazon charges for picking, packing, and shipping your products. The fee varies based on your item's size and weight. For instance, smaller items cost less to fulfill than bulkier ones. Amazon provides detailed rate cards to help you determine these fees.

Storage Fees: This part depends on how much space your inventory takes up in their warehouse. Amazon charges more during Q4 (October–December) because their warehouses are in high demand. It’s around $0.87 per cubic foot for standard-size items in non-peak months and $2.40 during peak season.

Referral Fees: Every time you make a sale, Amazon takes a percentage of the total sales price as a referral fee. This percentage varies by product category but typically hovers around 15%.

Additional Fees
There are a few other fees to keep in mind:

Long-Term Storage Fees: If your items sit in Amazon's warehouse for more than 365 days, you'll incur additional charges.

Removal and Disposal Fees: Need to pull unsold inventory or dispose of it? There's a fee for that.

Unplanned Service Fees: If your inventory arrives at Amazon's fulfillment center without proper labeling or preparation, they'll handle it—for a fee.

To get a clear picture of these costs for your specific products, Amazon offers a handy FBA Revenue Calculator. Just input your product details, and it'll estimate the fees involved.
I hope this helps demystify the FBA fee structure for you! Feel free to ask if you have more questions or need further clarification.