The Fender is probably around the $150-200 mark, they are not reknown for making acoustic guitars, the Gibson $800-$1100 depending on year and condition, Ive not found any info on the Yamaha, but i would think it would certainly be above the $400 mark, problem is there are so many diferent models of Yamaha acoustics, some cheaper than others but a quality Yamaha still holds good money, try putting it on ebay see how it goes.
Good Luck.