As of 2015, OfferUp recommends that all payments be made in person, in cash. Online payments and shipping of items are not encouraged; this is to ensure that all items are received in good condition.
OfferUp is an online marketplace that lets people buy and sell products in their community. Sellers can post a photo of the item with its price and description, and it will be shared with the site's users around the area. An in-app messaging system can be used by the buyer and seller to negotiate the price, arrange a meet-up and complete the transaction. OfferUp also has mobile applications for iPhone and Android phones.