The Universal carbine "looks" like the M-1 carbine, but is different. Most people consider these to the the least desirable firearms in this caliber.
If it is a really nice Iver Johnson, that is a fair price. If it is an IJ in fair to good shape, that is a bit high. If it is an issue M-1 in decent condition, that is a fair price.
In life, strive to take the high road....It offers a better field of fire.
"Robo is right" Fuzzball