Originally Posted by
Often1
This is a lucky and good result. I hope that you grabbed it instantly. Air ticket pricing is dynamic and can change depending on availability, in minutes.
OP is out 85 + cost of new ticket pp.
A new one way ticket looks to be around $750 for flights LON-JED before 10th July, all with connections and long layovers with total transit times of 10hr+.
Adding this to the $85 cost per ticket, it is more than the original offer to change the flight segment for $800.