The "Custom Carry" is a 92FS compact L with the billboard slide and some other minor mods. There are also "custom carry" packages that gunsmiths do. The two guns are completely different, one being a factory gun, the other a modification of any 92.
Personally I haven't noticed any real difference between a factory "Custom Carry" and my compact L, other than the billboard missing from my slide. I'd say the value would be about the same, with an added $25-50 to the factory "Custom Carry".
I've seen like new Custom Carry 92's for $475 to $650.
Any of the compact L's are nice guns. They conceal better than the full-size, but don't really sacrifice anything in shooting other than two rounds. The 13rd mags could be hard to find, but I run across them enough to say don't pay extra for a 13rd mag. The standard 15 round mags work fine as well, they just stick out.
Watch those panic mag changes too. The shorter grip can cause you to pinch some of the meat on your firing hand when you change mags with the 13rd ones. The 15 rd ones don't have that problem when used with the compacts.