Cost for Ladakh trip will lean on various factors.Such as: Number of people travelling
Number of days of stay
Places you are going to visit
I would suggest you to program your trip for 7 to 8 days so that you can cover most of the places and you have sufficient time to relax and enjoy the beauty of Ladakh. Approximately it may cost 42000 per couple. You can visit or contact Experience Your Stay With Fun and Freedom they have good Ladakh packages.