What is a third party sellers?

Third-party sellers are independent sellers who offer a variety of new, used, refurbished, and collectible merchandise. The steps to place an order with a third-party seller are the same as placing any other order on Amazon.com. You add items to your cart, then complete your order through the Amazon checkout process.

Also question is, how much do the top Amazon sellers make?

The whole breakdown makes interesting reading, but two statistics stand out: 34.3% of eBay sellers make under $10,000 per year, versus only 9.0% of Amazon sellers. Just 3.9% of eBay sellers make over a million dollars per year, versus 16.7% of Amazon sellers.

How many items can you sell on Amazon?

Amazon offers two selling plans. The Professional selling plan is available for a $39.99 monthly subscription fee plus per-item selling fees, which vary by category. If you plan to sell fewer than 40 items a month, the Individual plan may be best for you.