You cant beat the price. The only downside is the seller doesn't have the information you need to really get this this working, but google it and you can easily find how to begin creating files and accessing the device with your hand held device or pc. Additionally, the free library of .bin files is only available to those who purchase from amazon - bit deceiving as its in the description as being offered. Again, annoying but not horrible - 3d type holographic videos are out there for free, you just need to convert them and upload.
Overall, an incredible bang for the buck, just expect to do a lot of your own legwork in figuring it out.