Hi, I bought this neck, sans all hardware, about a month ago for $105 + 30 on Reverb. The seller stated that it had come to him with another bass and he had no idea if the trussrod worked, etc. I almost never see these come up, so after he said the rod did appear to tighten I decided to take the chance.
The trussrod works fine, it is a pretty decent neck. Slight hump at 8/9 frets that I will almost certainly attempt to "iron" out, but I have played necks that were much worse.
I did not notice until I drove the tuner ferrules in that there was a finish crack at the nut.
So, does this look like the wood mushing fretboard split? There is no problem under tension getting proper relief on this neck. The nut turns smoothly and easily.