Dragons appear to be able to buy at least the formula for the first 2 levels of scalepacks,(Slate Dragon Scale Pack)but the corresponding backpack recipes for bipeds are drop-only,which can take some time to acquire,due to the sheer number of formulas and techs that the mobs can drop. Would it be possible to make the backpack recipe buyable as well,at least for the first 2,as if it's available for dragons,it makes sense that bipeds should be able to buy it as well?