There are 21 chairs in total. We can offer a discount if you buy them all together. For 20 chairs, it's 5700, and for 21 chairs, it's 6000. Regarding the sparkling glasses, many have thin stems, and when used in restaurants, they often break due to repeated washing in dishwashers. However, these are not too thin and are quite sturdy, so I don't think they would chip or break easily. Height: 21cm, Top diameter: 5cm.