I won't part out a machine unless it's broken beyond repair. There are too many people any more on Ebay and other sites who part out working machines just because it makes more money than trying to sell them whole. You can justify it by saying there's plenty of them around, but in 10, or 20, or 30 years what then? There won't be plenty of them around any more because too many fixable machines were parted out.
I've given several machines away in the last year that I no longer had any interest in.
Cari