The other day I was talking to a cellar hand I know and I asked what size of winery they worked for. The answer -
"Quite large - I think we're doing over 10,000 cases this year."
Earlier in the month I met a wine maker visiting from Australia and I asked the same question.
The answer was -
"Just a little one - about 10,000 cases a year."
It's all a matter of perspective and into that you must figure what the PR and marketing department wants for an image.
Next time you see 'small, family-run estate winery' or such consider what that means and to whom. The owners might believe 20,000 cases fits that description. On the other hand, some people may regard that kind of operation as a major operator.