In case you want to use your Surface Pro 3 as a complete Desktop, you may like to go ahead and order "Surface Pro 3 Docking station" from Microsoft store. The Docking station is available for pre-order from today. It is priced $199.99 and the availability is indicated from August
Surface Pro 3 has become available now at stores in Canada and the United States. Those, who have placed pre-order for Intel core i5 version will receive them directly but the Surface Pro 3 tablets with Intel core i3 and i7 versions will start shipping by 1st of August.