eBay Trading APIVersion 1003

Applicable values for AddItemRequest.Item.ListingType

AdType
(in/out) Advertisement to solicit inquiries on listings such as real estate. Permits no bidding on that item, service, or property. To express interest, a buyer fills in a contact form that eBay forwards to the seller as a lead. This format does not enable buyers and sellers to transact online through eBay, and eBay Feedback is not available for ad format listings.
Chinese
(in/out) Single-quantity online auction format. A Chinese auction has a Quantity of 1. Buyers engage in competitive bidding, although Buy It Now may be offered as long as no bids have been placed. Online auctions are listed on eBay.com, and they are also listed in the seller's eBay Store if the seller is a Store owner.
CustomCode
(in/out) Reserved for internal or future use.
FixedPriceItem
(in/out) A basic fixed-price item format. Bids do not occur. The quantity of items is one or more.

Also known as Buy It Now Only on some sites (not to be confused with the BuyItNow option that is available for auctions).

Sellers must meet certain feedback requirements and/or be ID Verified to use this format. See eBay Features Guide for more information.

Fixed-price listings are listed on eBay.com, and they are listed in the seller's eBay Store if the seller is a Store owner. Stores fixed price items will be treated as basic fixed-price items. Permitted durations of 30 days and GTC are now available for store and non-store subscribers (in addition to the existing durations of 3, 5, 7, and 10 days).
Half
(in/out) Half.com listing (item is listed on Half.com, not on eBay). You must be a registered Half.com seller to use this format.
LeadGeneration
(in/out) Lead Generation format (advertisement-style listing to solicit inquiries or offers, no bidding or fixed price, listed on eBay).
(Not all values in ListingTypeCodeType apply to this field.)