Sell Your Own Home with Agent in a Box! Agent in a Box is Australia's most exciting and easy to use marketing, knowledge and support hub for those savvy property or home owners who prefer to sell privately and not pay any commission. Agent in a Box provide all the support and marketing tools available from a real estate agent, but without charging you the commission. You can sell 'For Sale by Owner' by listing on all the major real estate websites including RealEstate.com.au and Chinese international property site Juwai.com, giving you access to thousands of buyers without the big price tag.