for example A have 10b, and B have 10b
and A needs to send gold to B
B hire any ally C at price 100m
A keeps volley C with B, then
In the end. A keeps
A and B will have 20% gold extra
then A drops C, A will lose 40% gold
as a result, A loses 20% only, as the other 20% B gains it already
That's the gold transfer.
