just my thoughts on companies enterring into offtakes with ZEN at this time..
If (keykey word, IF), Aubrey is playing this for a buyout, he may not want to be locking into any sales agreements right now. If he does, they will likely be contingent on ZEN going into production.
Locking into sales commitments may limit flexibility in selling the deposit, as maybe the purchaser will not want to honor those contract(s) if they can generate a more optimal sales mix.
If anything, right now for the PEA the main thin is securing support for price points/applications to give RPA and any potential purchasers an idea of how they can approach mining and sales.
jmo