Plans and the sale fee

Standard is free. You can buy and sell without a monthly fee.
Plus is $4.99 per month or $49.99 per year.
The platform fee is 3% of the item price on every sale. It is not a different percent. Shipping is not part of the fee.
One permanently complimentary seller account is not charged this fee. Everyone else pays 3%.
Plus is optional. You do not need Plus to buy or to list.