Robert,
Quality beer? You bet. Usually, though, the beer my husband makes is better! And that opinion does not come entirely from bias.
I am afraid that I am guilty of switching some info. The minimum order is actually 2000, at $3 each, so $6000 plus shipping from China, which I am sure would be considerable.
I have seen them in person. Before I started making them, I bought a growler on Etsy that has one of these lids. They also sell glass growlers at the home-brew shop with the larger lids on them. Personally, I find the smaller ones more esthetically pleasing. The larger ones allow larger openings, however, and are definitely easier for the breweries and bottle shops to fill. This might protect the beer somewhat, too, by saving some of the carbonation. But that is just a theory.
Anybody want to go in on an order for the larger lids?
Alice