I'm looking at getting a mount, have a Bear that is almost 8 stars and the 'cost' for a perfect transfer is in the 2,300 gem range at the current feeding. I did some math and that works out to 1 gem per feeding for the perfect transfer. A bit high I'd say. If I don't do the perfect transfer, I go from 230k exp on the bear (current) to about 145k exp on whatever mount I get. As much as the perfect transfer costs, I might as well spend gems to train whatever mount I replace the bear with, and I'm sorry, but gems have much better uses than the exorbitant amount the prefect transfers cost. Thursdays eat all my gems, and I still have about 12,000 to 14,000 worth of jewel slots to unlock.