I'm really sorry to hear about 4string4ever's troubles. $700 or so bucks is still a good chunk of change for most of us, and if one is promised a "custom" instrument, that's what one should get. If the builder can't deliver, he shouldn't list his business as a "custom" builder. If he continues to deliver something less than custom, but continues to represent himself as a custom builder, he should be reported to the BBB and other organizations accordingly.
I guess it all boils down to expectation. Anyone seeing an advertisment for a "custom" bass costing $700 should immediately get their badar (bass radar) activated. A lot of folks here love Sadowsky's; you can't even approach a custom Sadowsky for less than $3K or more. Given the reputation that Sadowsky has in these parts, why would anyone think they'd get a quality "custom" bass for a $700 starting price? Maybe I'm missing something here, but I don't get it.
Bottom line is one gets what one pays for. This doesn't mean that something has to be expensive to be useful and bring one hours of enjoyment, but you will not, for example, see the same level of quality in a $1200 Fender that you will in an Alembic, Fodera, Pedulla, etc. I paid about $5K each for my Alembics, and it shows. The quality is superlative, best in my experience. And their support is legendary (in my experience, anyway). I'm sure Fodera and Sadowsky owners have had simliar experiences.
One is paying for more than just a bass when one lays out cash. Service, support, etc. are all part of the equation. Alembic, for example, would never be able to ask the prices they do for their instruments if the support wasn't at the same level. Case in point ...
My Europa had some places in the finish that appeared to be turning to a satin-type finish. I couldn't figure it out because it was only in certain spots. I contacted Alembic, we troubleshot the problem, and then they had me send it back (they paid for pick up and then delivery). They re-shot the finish in the affected areas at no charge. It now looks beautiful everywhere.
Had Alembic not done this, I'd have been mightily disappointed. One can make the case that a $5K bass shouldn't have these problems, and they'd be right. However, mine did. The difference is Alembic stood behind their product and fixed a valid problem due to no fault of my own (which it wasn't).
The fact that Pushic only did the minimum reflects the cost involved. You're not going to get the same level of support from Fender, Musicman, Gibson, etc., for example that you will from a high end, reputable, custom builder. For them, their reputation is on the line with every instrument they make. They know if they don't deliver, they're out of business. The mass produced instruments ... well, those manufacturers know they can get away with it. They make a whole bunch, and kill the competition by sheer force of numbers. If one guy has a bad experience and never buys a Fender again, so what. There's another guy waiting to take his place because the price is right.
Bottome line: if this guy is representing his work as custom and not delivering, he should stop doing so. Short of that, I think we'd all be well advised not to purchase a Pushic if the problems 4string4ever and others have documented remain to be the norm rather than the exception.
My two cents,
Alan