Nemchange, a cryptocurrency exchange for buying and selling NEM based tokens called mosaics has been launched. It runs on NEM blockchain – just like ERC20 tokens run on ethereum blockchain. You can trade any mosaics created on Nemchange. Right now, Nemchange does not allow you to trade non-NEM tokens and cryptocurrencies (other than NEM) but team has plans to add support for some of the most popular ones in future.
Right now, the withdrawals on the exchange https://nemchange.com/ are being handled manually so it can take some time for your withdrawal to be processed. But soon, it will be semi automatic which will result in faster withdrawals.
It means, that every time someone makes onchain transaction, sender is obliged to pay additional transaction fee to mosaic creator. It depends on mosaic if it’s percentage fee, or constant fee. It not concerns offchain transactions.
Everytime you make an order on exchange, price is 0.5 percent and if you are withdrawing, price is 3NEM + levy.
Not all mosaics have levs in their mechanic. This means that everytime you make a transaction, you are obliged to pay additional transaction fee to mosaic creator. It depends on mosaic if it is a percentage fee or constant fee.