There are two movies, of the western genre that must share the title of most expensive movie ever made. They are Wild, Wild West and Rango. The reason for the shared titleone of the movies is animated, a non-traditional western movie format.
First up, the Wild, Wild West released in 1999 was directed by Barry Sonnenfeld. It starred Will Smith as Capt. James West; Kevin Kline in the dual role of Artemus Gordon and Ulysses S. Grant; Kenneth Brangh as Dr. Arliss Loveless; and Salma Hayek as Rita Escobar.
Shot at multiple sites that include Santa Fe New Mexico, Idaho and the Warner Brother lots, the film cost approximately 170 million to produce.
Identified as steampunk (films based on the late 19th century with unusual steam powered mechanical inventions),the film ,which was based on the popular TV series that ran from 1965 to 1969, did not do as well as expected and actually came in 36th place on the list of Worst Movies Ever.
In March of 2011, the movie RANGO an animated western was released. Directed by Gore Verbinski, it starred Johnny Depp as Rango”a chameleon, Isla Fisher as Beans”an iguana and Abigail Breslin as Priscilla”a mouse. The actors dressed in western costumes to help them get into character as they performed the voice overs. The animation was created by Industrial Light and Magic Company. The final cost of the movie was 150 million.More info here: Rango review