flor, KSA government got back the prince from UK to keep him under preferential treatment in the name of prisoner exchange..This is just because he was a prince. Also, does it mean that any royal family member, who has the money to pay blood-money can kill and then pressurise the victim's family to accept blood-money?

I have not read anywhere that the man servant's family was offered blood-money. Since you know about it, let us have the link too..