Complex sentence: Even though ticket prices were probably out of reach for most Egyptians the Heliopolis meeting was a huge crowd success among the European population of Cairo, and it certainly served its purpose of promoting Baron Empain's "Oasis of Heliopolis".
Split into simpler sentences: Even though ticket prices were probably out of reach for most Egyptians the Heliopolis meeting was a huge crowd success among the European population of Cairo. It certainly served its original purpose of promoting Baron Empain's "Oasis of Heliopolis".