On Amazon, for example, there are quite a few, just note the diameter.

If the lid seals well, the outlet tap no longer works because of the vacuum. I always have the lid only loosely on the glass.

Prices are constantly moving here, based on stocks, demand, supplyer's price, and occasional discounts... Price may go down again, but I bet Galaxus will not (or can't) tell when.

The product is made of glass, tin, silicone and plastic. The tap itself seems to be made of plastic, but unfortunately there is no exact specification.