Regarding the price, it's not surprising if it's really good chocolate, although it's more than I would spend. The price of chocolate is very high now due to crop failures in Africa. Heck, some 2 oz. chocolates go for around $400 a piece!
It's also not bad compared to some other "luxury" calendars. Bloomingdale's beauty calendar sells for $325. Dior's calendar? $800.
I usually go for the $1.25 calendar from the supermarket which gives me a whopping .0something oz. of chocolate (probably artificially flavored) each day of advent.