Merge Academy - The scoring doesn't make sense

The scoring of this game is so backwards. If you calculate the return on investment for the customer orders, you make fewer purple gems the larger the order. The most efficient way to progress through the levels is to just convert some of the items you produce directly to gems. For example, I have an order for a "Phone of Magic" and a "Table of Spells" that yields 161 purple gems. The cost for those items is 3072 energies. That's a little over 19 energies per purple gem. On the other hand, a "Magic Folder" costs 4 energies and can be directly converted to 1 purple gem. So, if I ignore the order and just convert "Magic Folder" to purple gems, I can get 161 purple gems for 644 energies. That's about 1/5th the cost. In effect, the scoring penalizes you for playing the game. The game was fun but now that I've seen this it just seems ridiculous.