đź’° Inbound Shipping Fees

Shipping costs can make a huge difference to profitability, but until now, they’ve been easy to overlook or estimate loosely.

With this update, you can now set your average inbound shipping cost per lb or kg, and ArbiSource will automatically calculate the estimated shipping cost for every product you analyse.

The fee is deducted from the total profit and ROI automatically — giving you an instant, realistic view of what each item will truly return once it’s on its way to FBA.

📦 Storage Fees

Storage costs are another hidden expense that can add up quickly, especially for products that take a while to sell.

You can now set how long, on average, you tend to hold inventory in Amazon’s warehouse. ArbiSource will then automatically calculate expected storage fees for each product, based on:

  • The product’s category and dimensions
  • The time of year (we automatically handle peak and non-peak rates)
  • The assumption that you’re sending the product in today

This gives you a true end-to-end view of profitability, factoring in not just what you pay upfront — but what it will cost to keep that item in FBA over time.

⚙️ How to Set It Up

You can find both new options under:
Account → Settings → Additional Costs

From there, simply:

  1. Enter your average shipping cost per lb or kg
  2. Enter the number of months you typically hold stock in Amazon’s warehouse
  3. Save your settings — and ArbiSource will automatically include these fees in all future profit and ROI calculations.

It’s completely optional, so if you’d prefer to keep using the base profit calculation, you can leave these fields blank.

🧠 Why This Matters

Sourcing decisions are only as good as the data behind them.
By factoring in real-world costs like shipping and storage, you’ll:

  • Get a more accurate reflection of your true margins
  • Avoid overestimating profits on heavier or slower-moving items
  • Make smarter decisions about what’s actually worth sending to FBA

Ultimately, this feature helps you source with confidence — knowing that every ROI figure you see in ArbiSource is as close as possible to your real bottom line.