If they became ECAs it is obvious they can know how to sell and what prices to establish, it is something which someone who works in sales knows perfectly. However, in case they ask about this, it depends what precisely they ask ..But anyway, you should advise them to choose a decent price, as low as possible but advantageous from the point of view of the transportation cost as well...Also, the ECA should not forget the 15% he/he should add as deposit fee in SFI.