Online Marketplace Fees Compared: What You Actually Pay to Sell

What Online Marketplace Fees Actually Are

Online marketplace fees are the costs a platform takes in exchange for connecting you with buyers, and they come in more flavors than most sellers realize. The big four are listing fees, final value fees, payment processing fees, and subscription costs. A few platforms also add charges for optional extras like promoted placement or premium store features.

Here is why this matters: the headline fee a marketplace advertises is rarely the whole story. A platform might promote a low final value fee, then add payment processing on top, or charge you to list before you have earned a dime.

The only number that counts is your all-in cost: everything the platform and its payment processor keep from a completed sale. Once you learn to calculate that figure, comparing platforms takes five minutes instead of an afternoon of squinting at fee schedules.

This guide breaks down each fee type, shows how they compound on a real $100 sale, and covers practical ways to keep more of what you earn.

Listing Fees: Paying Before Anything Sells

Listing fees are charges just for posting an item, whether or not it ever sells. Most large general marketplaces in the US skip them or include a monthly allowance of free listings, while some niche platforms charge a small per-item amount, often around 20 cents, that renews every few months. Those are small numbers, but they add up fast for sellers who list hundreds of items or carry slow-moving inventory.

The real problem with listing fees is psychological as much as financial. Paying up front on items that might never sell punishes experimentation. You start listing only your safest items, and your store stagnates.

Kash Marketplace takes the simpler route: listing an item is free on every plan, and if it does not sell, you pay nothing. That structure keeps the cost on the sale itself, which is where it belongs.

Whatever platform you use, confirm two things before you post: whether listings expire and auto-renew with a new charge, and whether relisting an unsold item costs money.

Final Value Fees: The One That Really Matters

The final value fee is the percentage a marketplace keeps when your item actually sells, and for most sellers it is the biggest line item by far.

Across major US marketplaces, final value fees for common categories tend to land roughly between 5 and 15 percent, with many general platforms sitting somewhere around the low teens. Rates usually vary by category: electronics are often treated differently than clothing or collectibles, and some platforms add a surcharge on low-priced orders. These numbers change regularly, so always check each platform's current fee schedule before you commit.

Two details deserve special attention. First, many platforms calculate the fee on the total the buyer pays, including shipping and sometimes sales tax, not just the item price. A $50 item with $15 shipping can be charged as a $65 sale.

Second, per-order fixed fees, often around 30 to 40 cents, hit cheap items hardest. On a $10 sale, a 30 cent fixed fee is an extra 3 percent all by itself. If you sell low-priced goods in volume, the fixed portion of the fee matters as much as the percentage.

Payment Processing: The Fee Inside the Fee

Payment processing is where fee comparisons get slippery. Some marketplaces bundle card processing into their final value fee, so the advertised percentage is genuinely all-in. Others quote a final value fee, then add a separate processing charge, commonly somewhere around 2 to 3 percent plus a fixed amount per transaction.

That difference can flip a comparison. A platform advertising a 6 percent fee with separate processing can end up costing more than one advertising 9 percent all-in, and you will not see it until the payout lands.

When you read a fee schedule, look for the phrase 'payment processing included' or its absence. If the schedule is vague, run a test calculation on a sample sale and compare the projected payout to your sale price. The gap between those two numbers is your true rate, no matter what the marketing page says.

A Worked Example: What You Keep on a $100 Sale

Numbers make this concrete. Say you sell an item for $100 with shipping baked into the price.

On a typical large marketplace. Assume a final value fee of around 13 percent plus a fixed fee of around 30 cents, a realistic middle-of-the-road scenario for a general category. You would pay roughly $13.30 and keep about $86.70 before shipping costs. Add promoted placement at a few percent and your take drops further.

On Kash Marketplace through Kash Pay checkout. On the free Starter plan the final sale fee is 5 percent plus 30 cents, so you pay $5.30 and keep $94.70. On the Growth plan the fee is 4 percent plus 30 cents: $4.30, keeping $95.70. On Pro it is 3.5 percent plus 30 cents: $3.80, keeping $96.20. Payment is made by card through Stripe and covered by the refund policy, and seller payouts run through Stripe as well. The full breakdown is on the pricing page.

A gap of roughly $8 to $10 on every $100 sale is the difference between a hobby that breaks even and a side business with real margin. Multiply it across a month of sales and the fee schedule you chose becomes one of your biggest business decisions.

How to Keep More of Every Sale

Calculate your all-in rate before you list. Add the final value fee, payment processing, any listing charge, and your subscription cost divided by your typical monthly sales. That single number is what you should compare across platforms, and it is the honest version of every 'low fees' claim.

Match the plan to your volume. Subscription tiers only pay off when the fee savings exceed the monthly cost. On Kash, the Growth plan at $29 a month drops the sale fee from 5 percent to 4 percent, so it starts to make sense as your monthly sales climb into the thousands of dollars. Run your own numbers instead of guessing.

Price your fees in. Fees are a cost of goods, not a surprise. Build your all-in rate into your pricing floor so every accepted offer is still profitable. This matters most on platforms with offer systems: on Kash, buyers can make offers on most listings and those offers expire after 48 hours, so know your floor before you respond.

Skip the extras you do not need. Promoted listings, premium placement, and add-on services are optional. Test them deliberately with a set budget instead of leaving them switched on and hoping.

If you want to see how a lower fee structure feels in practice, you can browse listings without an account, then create a free account when you are ready to sell. The seller tools page covers what each plan includes.

What fees do online marketplaces charge sellers?

Most US marketplaces charge some combination of four fees: listing fees for posting an item, a final value fee taken as a percentage when it sells, payment processing fees, and optional subscription or promotion costs. The final value fee is usually the largest, often landing roughly between 5 and 15 percent depending on the platform and category. Always check the platform's current fee schedule, since rates change and some platforms include payment processing while others add it separately.

How much does it cost to sell a $100 item on an online marketplace?

It depends on the platform, but on many large general marketplaces the all-in cost of a $100 sale often works out to roughly $10 to $15 once final value and processing fees are counted. On Kash Marketplace, the fee through Kash Pay checkout is exact: $5.30 on the free Starter plan, $4.30 on Growth, and $3.80 on Pro. Listing is free on every plan, and if the item does not sell you pay nothing.

Do you pay marketplace fees if your item does not sell?

On most marketplaces the big fees only apply when an item sells, but listing fees and subscription costs are the exceptions: platforms that charge them collect whether or not the item moves. Some platforms also auto-renew expired listings and charge again each cycle. Before you post, read the fee schedule for terms like 'insertion fee' or 'listing fee' and check whether unsold listings renew automatically.

Are marketplace fees calculated on shipping too?

Often yes. Many marketplaces calculate the final value fee on the buyer's total payment, which can include shipping and in some cases sales tax, not just the item price. That means charging $15 for shipping raises your fee even though shipping is not profit. Check each platform's fee schedule to see exactly which amounts the percentage applies to, and factor that into how you price shipping.