Answer a few questions about your shipping setup to find costs worth checking. Use the results to decide what to look for on your next carrier invoice.
Four questions. Sixty seconds. The plain-English answer your invoice won't give you, plus the number it's costing you a month.
A rough number is fine. This is what makes the math real.
This is the single biggest factor in whether you can see what you're being charged.
Select every carrier that shows up on your invoices.
Select everything that matches. More than one usually applies.
Your checkup shows where to look. Your invoice shows what you paid. Send one recent carrier invoice for a free review of your rates and extra fees.