I have a very nice, in good condition, Startrekk Treeless Western Saddle for sale. It's a 16 inch, has a few scratches on it. This saddle has several options to fit a variety of horses: 2 stirrup locations, 4 pommel sizes (mine has a #3 inserted), moveable panels for spinal clearance. I have the short western fenders but you can purchase the longer western fenders, if needed, from the Saddling Solutions website. Here is the website with more info on the saddle:
This saddle retails new for $1,695.