this is a link to some great info about enjoying food at the Christmas Markets in Prague.
https://livingprague.com/food-and-drink/prague-markets-pay-weight-food/
many folk do get caught out but fore-warned is fore-armed , enjoy yourselves and make sure you don't end up paying too much.
Good link unclegus. Something like that happened to my sister in law and I a few years ago at a summer festival on Kampa Island. Our bargain slices of meat roasted on a spit turned out to be quite expensive, but delicious...
Yeah it is a common one that, called Prague Ham, it is lovely stuff but priced per 100g and usually a portion is 200g or more.
The law did change in that they must inform you now of what the cost of your plate of food will be .
sort of like "per etto" in Italy.....