I know I'm opening up a can of worms here, but I'm just looking for your honest opinions if you were lucky enough to play or own an American and MIM/MIJ.
I'm opting to buy a fretless Fender JB and I'm willing to save up the necessary funds for the American made, the only problem is I don't want the price tag to fool me into thinking I'm getting a much better fender jazz bass compared to their Mexican and Japanese ones. Especially since it's twice the price of a Mexican/Japanese, which seems really high considering I can get a Mexican JB and a P too for that money.
Obviously I want to be playing an awesome bass but it just seems like a lot of money is going into an 'American' label. Although I have no say in this and can't judge between Am and MIM/MIJ because the only fender product I have and played is a squire jb. I'm not too keen on buying 'used' either for a fretless.
Could you give me your honest, unbiased opinion on whether it was worth it to you to pay the extra dollar for any of their American basses?
Almost forgot to answer the thread question.
Yes they're worth it..definitely.
Dude this is what you want

A mim road worn p with a 70s American Fretless B neck.
Or a road worn J with a 70s A neck whatever.
Anyways...
I guess the other bass in the pic qualifies me to to have an opinion.
As others have said , worth depends on wealth.
My used American vintage 63 cost 2x as much as my used road worn precision. I imagined it would be 2x as good and I'd then sell the road worn. For some reason I still have that road worn, b/c it's still an awesome bass made with good resonant wood and a stable smooth playing neck.
The AV 63 is technically better but the road worn is so good I'm having a hard time letting it go b/c it cost half as much.
You can get real close to mia quality with the right mim and I know that b/c I have both and I'm obsessive over product quality. If the road worn didn't have the faux wear and relic and I put it next to an avri 57 you would not know the difference unless you knew some very specific things about their manufacture.
Ask yourself this though...
If you don't get the mia are you going to constantly think about what if your mim/mij doesn't measure up?
My advice is get whatever bass eases your mind and allows you not to worry about things like where it was made or if you could have gotten something better
*edit to add
Check this spec sheet out.
It compares the classic 50s p to the avri 57. Look how much hardware is shard btwn the two
**another edit
Look at the neck specs from fender
They are the same. If someone tells you their avri 57 neck is chunky compared to a mim 50s it's probably b/c they have heard that real 1950s necks are chunky. This data proves they are literally the same measurements.
I'm sorry for blathering on and on about it and I've tried hard to avoid landing on any of the mim/mia bingo squares.