NEM is a blockchain technology based innovation that came up in 2015, the project comes with lots of clearly stated visions and goals,the blockchain project has greatly help top business firms and organizations to tremendously solving the issue low optimization in their operations.
NEM has its own currency the XEM. In the market today most traders prefer going for other currencies like ETH and BTC and so they don't actually know the the great potential that XEM coin holds for investors, although the coin is not yet adopted as a means of payment by merchant stores this I think is one of the reasons most traders prefer to hold other coins but not withstanding XEM still has a great value to its holder with its present price of $0.7 and its almost certain that the coin could soon rise to $1 in value.
NEM is decentralized project likewise its coin and so it can be traded without any interference from central authority and can easily be sold since almost all exchanges list XEM on their trade list with many trade pairs and hence XEM comes with a great liquidity.