Abstract: Systems and methods are disclosed to receive an indication that a buyer has placed an item in a virtual shopping cart. One or more conversion shipping options associated with shipping options used to ship one or more previously purchased items purchased by the buyer may be determined. One or more non-conversion shipping options associated with shipping options presented to the buyer with one or more unpurchased items previously placed in a virtual shopping cart by the buyer but not purchased by the buyer may be determined. A plurality of conversion probabilities may be determined for a plurality of different shipping options for the item in the virtual shopping cart based at least in part on the conversion shipping options and the non-conversion shipping options. In some embodiments, a shipping option may be selected based on the plurality of different shipping options and the plurality of conversion probabilities.

Abstract: Computer-readable media, computer systems, and computing devices for facilitating presentation of search result items having varying prominence is provided. The method includes referencing a search result item to be presented within a search results page in response to a search query. Thereafter, a determination is made that a size prominence of the search result item is to be modified. Such a determination can be based on a result attribute(s) associated with the search result item and a result attribute(s) associated with other search result items within the search results page. The size of the search result item is adjusted in accordance with the determination that the size prominence of the search result item is to be modified.

Abstract: A first delivery estimate prediction model and a second delivery estimate prediction model are generated using historical data from an online marketplace. Transaction information related to an item listed in the online marketplace is determined. A first time estimate is calculated by applying the transaction information to the first delivery estimate prediction model. A second time estimate is calculated by applying the transaction information to the second delivery estimate prediction model. A delivery time estimate is generated based on the lowest of the first time estimate and the second time estimate.

Abstract: Computer-readable media, computer systems, and computing devices for facilitating presentation of search result items having varying prominence is provided. The method includes referencing a search result item to be presented within a search results page in response to a search query. Thereafter, a determination is made that a size prominence of the search result item is to be modified. Such a determination can be based on a result attribute(s) associated with the search result item and a result attribute(s) associated with other search result items within the search results page. The size of the search result item is adjusted in accordance with the determination that the size prominence of the search result item is to be modified.