Virtual Reality (VR) is an immersive technology to simulate real or imaginary environments and situations with a high level of realism and interactivity. Users need to wear a VR glasses in order to undergo the experience. They can choose from one of the hardware pieces available, as explained bellow:    

Oculus Rift is the leading Virtual reality headset in market. This is the high-end solution powered by computer that delivers the best VR experience to date. Average hardware cost including all the elements needed to operate it is about US $3.000. This is a cost-effective solution for training facilities and marketing events.  

Samsung Gear VR is a piece of hardware powered by Oculus in partnership with Samsung. This hardware solution works with Samsung’s S7 Phone plus a plastic headset. Average hardware cost is US $1.100. This is a cost-effective solution for marketing events where the goal is to show content to a large group of people aiming at a similar visual quality than that of the Oculus, but without its interaction capabilities.

Google Cardboard is a low-end solution. It only needs a phone with Gyro and a cardboard box with lenses that serves as handset. Average cost is US$15 + app user cellphone. This is a cost-effective solution to reach a large number of people at the expense of interaction and visual quality. Users only need to download app and google play and insert the phone into the cardboard.