On the Steem Monsters discord server there is a channel called sm-voters_hut which is the 'house' of the Steem Monsters discord server bot.
Among its commands, there is $stats username, which calculates some quick stats for an account, like the number of cards holding, number for each edition and types, number of gold cards, BCX value (which I understand is the number of level one cards) and the market value of the cards in your collection.
Here are my stats right now:
I believe though there is something missing from these stats: the reward edition cards.
While low in value right now, that can change, and for new accounts this can make a bit of a difference.
I wonder if they will be added...