I would expect some ghosting on a machine that is twenty+ years old... But If people are buying NIB games and documenting ghosting over a few days there seems to be a problem. I agree there will be some who will not risk NIB due to this.
I was lucky with my early production GB, I had a small chip in the shooter lane, which I filled, applied mylar, and a cliffy. and it hasn't gotten worse, but I don't have the ghosting a lot of people posted. It sucks looming over a new 5-7k purchase wondering if you're going to be one of the unfortunate buyers.
I hope some of these other companies can get their feet planted and produce games at a quicker rate... Cough, JJp, Cough...
All companies have their problems, but stern seems to be leaning towards making excuses rather than address their issues...