Once you have your cards sorted, go online and pull up a card appraisal service or market, like TCGplayer, MTG Price, or Card Mavin
If you're worried about losing life from fetchlands, why not just go with the financially painless Evolving Wilds + Terramorphic Expanse at the cost of them putting lands in tapped (not that that matters, as long as they shuffle) or Ghost Quarter so you don't have to pay life
There are a number of creatures that have lifelink for this very purpose
It might be the best card previewed thus far
Black Market It takes some time for Black Market to get rolling, making it fall into the slower category
And of course, this new type of double-faced card might appear in future sets with nonland card types on the back