The stamp may seem pricey, but I expect that it will become considerably more so, as it has dual market appeal for both collectors of Mexico and Aerophilatelists. The autographed flight covers are important relics of aviation history, and are coveted by those who collect autographs, stamps, and aviation memorabilia.
With a population of about 109 million, Mexico has experienced consistent annual GDP growth of between 3 and 5%. It has a diverse and developing economy, but modernization remains a slow and uneven process, and current challenges include addressing income inequality, crime, and corruption, upgrading the infrastructure, and reforming tax and labor laws. Stamps of Mexico are popular among collectors in the U.S. .
I have begun a new blog, "The Stamp Specialist", which will feature wholesale buy prices for stamps which I am interested in purchasing. The first such buy list is for Mexico, and includes the stamp recommended in this article. Viewing dealers' buy lists every now and then is an excellent way to keep current on the vagaries of the stamp market.