Suggestions:
-3kcr for a 2* recipe
-6kcr for a 3* recipe
-12kcr for a 4* recipe
-30kcr for a 5* recipe
Possible other part: Boss recipe vendor exclusive to the 5* Hall of Heroes.
-9kcr for a 3* boss item recipe
-18kcr for a 4* boss item recipe
-36kcr for a 5* boss item recipe
Point of this is to make recipes available to those who want them but to also encourage use of Basil and bring back the mostly-dead recipe resell market.
Even at the increased prices, the recipes will always be constant. All you'd have to do is one more Jelly/Vana run, and you can buy the recipe.
They should remove the recipes all together and let you test out the equipment, rather than simply handing it to you. There's no real incentive to explore the Clockworks at the moment, save for a chance at getting a Lockbox or finding a Scenario Room.