You can enter the following fees into your calculations which can all be found in the Settings section of SAS here.
Additional Costs
Prep Fee: The per-item cost for using a prep center for your FBA shipments.
Miscellaneous Fee: Any other per-item costs you need to include.
Miscellaneous Fee (%): A per-item cost, calculated as a percentage of the product's cost.
Inbound FBA Shipping: The amount which you pay to ship your product into Amazon - see more details here.
Inbound Placement Fees: Fees charged by Amazon for splitting and distributing your inventory across their fulfilment centres.
Peak Storage Fees: The higher monthly storage fees that apply to FBA inventory during the peak holiday season (October to December).
CEP Storage: A program for sellers in the German marketplace that allows you to store inventory in Amazon's fulfilment centres in Poland and the Czech Republic to potentially lower fulfilment costs.
European Fulfilment: If you sell cross-border in Europe, this is where you can select the scheme you use when selecting the destination marketplace in the European Marketplaces panel. More details can be found here.