Some time ago company named Nexbit announced Robin - smartphone produced by former employees of Apple, Google, HTC and Amazon. This phone had 5,2-inch FullHD display, Qualcomm Snapdragon 808 processor, 3GB of RAM, 32GB of internal storage, 13mpx main camera and 5mpx front camera, so when we take a look on its specification, it's not too powerful, but it had one unusual thing - integral part of the phone was cloud in which the phone had additional 100GB of memory. If your phone had little free memory, things rarely used on your phone were automatically transferred to the cloud.
This idea was quite unusual and interesting, but phone itself hadn't received good reviews and was sold in small quantities, so Nextbit announced that by the 31th of July support for Robin will end. The last units of the phone are listed on eBay at promotional price - 110$.