you're missing the point...
as a musician, I would like something like this. a 150W amp, I'd gladly pay around a hundred quid for second hand, (that's the absolutle top limit including delivery).
A broken amp that I may or may not be able to rely on that has already blown a fuse, where it's uncertain if this is due to electrical fault in the amp or just some kind of power surge, well I might take a chance and spend £20 or £30 on it.
but not bothering to take the time to have a walk into town and spend 70p you may well have lost out on £70.
you were asking a few days ago how to make money on ebay, well the answer is quite simply to ensure that what you are selling is the best that can be sold.
everyone knows that there are a few tricks on ebay.
the sold as seen no returns trick just means broken.
I saw an auction the other day for someone selling something sold as seen, when a seller asked if it powered on, he wrote a reply saying that his time was too valuable to test it.
but like I say, it could be the difference of a lot of money.
assuming that you've not lost out on £70, even if you halve that are you really saying that your time is worth £50 or more an hour?