Not to mention that, because Ultimate Magic: Holy prevents damage and not just your life total changing, you can't even be knocked out with commander damage
Despite this, its often worth checking out Japanese sets, as theyll give you great insight as to what is to come for English sets, a little further down the line
That means your fish army can play offense and defense, countering board wipes or big spells on the fly
On eBay you can easily search for your cards, the grades, and what they sold for
Currently (at retail prices) there are 24 cards in Shadows over Innistrad worth at least the cost of a booster (which for this exercise I assume is $3)
Nonetheless, some of the playtest cards like the Shivan Dragon graded by CGC are apparently much more valuable than their regular Alpha counterpart - so were perhaps close to the playtest cards being more noticed (although I do not really care)