ZiHad Zihad

If we list any data on Itheum We need to pay any fees for that before selling ? Or after selling we need to pay some fee? And if we creat any offer we can cancle it later? ...

if i want to sell my any data, i need to fixed any ammount for that? or i can do a limit price, who offer me the highest price he get the data

Btw, if i list any data on Itheum. Everyone can see it? Then my data will be viral. And without showing my data or resource about that who can buy it.

Itheum, Is it connected with eth?