Thought it would be a good idea to quote the original post because, even though I haven't read all of this thread, I've read enough of it to notice that it has devolved to the point where people are talking about P basses (the OP wants a J) and various models that are only available as fretted (the OP wants a fretless). Totally predictable, of course.
Well, that said, I'm going to go off course too!
If you're concerned about being "fooled by price tags", I'd suggest the OP check into the Sire Marcus Miller line. Their V7 model is a jazz style and is available in fretless. A big reason these are so reasonably priced is that they sell direct to the consumer, not through a retail dealer network. So it's priced even lower than a MIM Fender and is available in Europe from Thomann, a distributor in Germany. I recently bought one of the fretted models and love it.
While I have no direct experience with Fender basses, many other Sire buyers own, or have owned, Fenders and the consensus seems to be that they are every bit as good as MIA Fenders. The preamp is outstanding and very versatile, an important consideration (depending on the fretless sound you're after) and it also can be played passive. They do have to be ordered and there is a wait, but they are in demand and can be resold easily if you don't end up liking it. The few that have been resold here on TB seem to get snapped up within a day or two. So mimimal risk.
Obviously, if the name on the headstock is of primary importance, this is not for you. But if you're looking for a great traditional jazz style fretless, you should at least check it out.
As for the original question . . . Can of worms? Of course. Value is always subjective and really only a decision you can make for yourself.