We're not sure what L. Frank Baum thinks of that, but hey, it worked with the ladies from Sex and the City.
But bets seem to have been placed on the Cowardly Lion as a top-earner, since it's the most expensive at 76 Pearls or 63 Facebook Credits ($6.30 USD). All the other Oz character-fish are tied at 66 Pearls or 55 FB Credits ($5.50 USD).
The two witches come with special effects. The Wicked Witch is suppose to cackle in your tank, but she's been quiet, and players are reporting this as a bug/oversight. The Good Witch fills your tank with sparkles, and costs one Pearl more than the Wicked Witch (45 Pearls)... but oddly, Good Witch costs the same in Facebook currency, which is 38 FB Credits ($3.80 USD).
The Lollipop Guild itself -- Jolly Munchkin, Jolly Munchkinette, and Lil Munchkin -- can all be bought with coins, with the Ruby Slippers going for a surprisingly cheap 125 Coins. And just for the heck of it, the game threw in Dorothy's House with dead Wicked Witch of the East included, for 12 Pearls or 10 FB Credits ($1.00 USD).