First go to Obelisk oficial site (obelisk.tech)
second search in the oficial site for the oficial discord server
third at discord server of obelisk search for marketplace room.
fourth in marketplace you find me with same user name that I use here.

There at marketplace will be oficials representatives to make escrow for us and explain to you all datails about this.

Any doubts you can directly contact obelisk support, I am sure that Jeremy or any other Obelisk representative will be able to remove any doubts from you.

In case something is not clear, please let me know so I can try harder to explain it better.