Here's from the Final Draft script of "The Last Gunfight" by Lee Cronin, dated May 9, 1968:
Scene 20 EXT. DESERT
The men are standing in the same position as before the optical.
Scene 21 OPTICAL
AS THE MEN LOOK ACROSS THE BARREN LANDSCAPE, SUDDENLY A STYLIZED SALOON EXTERIOR POPS IN. THE STARTLED MEN LOOK AROUND AND THE FALSE FRONT OF A NEWSPAPER OFFICE WITH ITS CUSTOMARY BULLETIN BOARD IN FRONT POPS INTO VIEW.
So, by the final draft, at least, the script was calling for a more surreal western town. If it had been done as a cost-saving measure, that decision was made while the script was still undergoing revision.
Is the the only description? Because "stylized" could mean almost anything other than looking normal. I certainly don't get "surreal" from that (a word almost everyone uses to mean something "bizarre" rather than what surrealism actually means).