So these guides add up what it really costs to sell online, platform by platform. I show the fee math step by step so you can redo it with your own sales.

The monthly plan fee, the referral fee, Fulfillment by Amazon fees, storage, returns and ads for a US seller, added up on a $25 sale so you can redo the math yourself.

The listing fee, transaction fee, payment processing fee and Offsite Ads fee for a US seller, added up on a real-sized order so you can redo the math yourself.

The real numbers for a US seller, with the math shown so you can swap in your own order size.

Three example budgets for a US store at $1,000, $3,000 and $5,000 a month in sales, with the math shown so you can redo the totals.