Eggs

Eggs do not appear to be sold in a standard quantity (sorry I am missing the ten-egg carton).  Egg sizes may be a bit random, which is why the label on the 15-egg carton shows that there are two sizes inside.  There is a chart inside the carton with the approximate size and weight of different eggs.

Very large (XL) - >73g
Large (L) - 63-73g
Medium (M) - 53-63g
Small (S) - <53g 

Most recipes list ingredients (e.g., flour, sugar) by weight and not volume so it wouldn't be a problem to weigh the eggs, too.