What should I enter as the sold price?

Sold price = Full selling price minus shipping (if you offered free shipping). The sold price is the full amount that the item sold for before removing any marketplace fees. If you offered free shipping on the sold item (e.g: you included the shipping cost in the price of the item), then deduct the shipping cost to get the sold price. If your item sells in a bundle, the sold price will be equivalent to the listing price of the item minus the bundle discount.

As a Pro Seller, your commission you set must be all-inclusive, meaning that it must account for and include in it any fees charged by marketplaces you might use (except shipping fees). The split applies to the actual selling price and not to the net earnings (shipping is excluded of course). The client expects to earn the selling price of an item minus the commission you set.