Just for comparison, my wife and I booked an overnight Luxor excursion on our Seabourn cruise in April of this year (2023). We stayed overnight at the Hilton Luxor Resort and Spa. The excursion included bus transport to/from Luxor, hotel, an excellent private dinner and entertainment/show, guided entrance to Luxor Temple, Karnak Temple (both day and evening), Valley of the Kings with admission to two tombs, and photo stops at a number of other sites. It was an excellent excursion, and cost $799 per person. You could book the dawn balloon ride separately via the guide for less than $100 per person. We did not book the balloon, as we feared that it would be too tiring for us in the midst of two rather busy and strenuous days. If we were a bit younger, we probably would have done so.
All in all, if Crystal is charging something like $2500 pp for this excursion --- it IS truly outrageous, although it is a wonderful experience.