Hi Grant,
Well it does seem to be a little hit and miss with these VIDA units. I've had mine for a good length of time now and have not had a single issue (touch wood). I personally got mine from EBay and it came from China but I did ensure I bought one from someone who had good feedback. However good feedback for buying doesn't help you 12/18 months later.
I've never been stung with customs costs when getting anything from China but if I buy anything from USA I always seem to be hit with extra costs.
It appears hard to recommend a certain seller to get a guaranteed 'good one' so I'm afraid it is all a bit of a gamble.
Clan has said in the past you can buy one over the parts counter with the part number but of course this going to cost a fair bit more than one from EBay. It may however last a bit longer but you could probably buy a couple of China ones. Choices choices???