I Don't know why but I am feeling a bit nosey into riot logic. So I noticed part of Morello was 1600 but the total cost was 3000, yet Liandry's part was 1500 and total cost was 3100, both having the Blasting wand as the 2nd part of the build @ 850.... so?
To top it off, Oblivion orb(1600) gives you less AP. I am thinking thee prices are supposed to be versed, Since 3100 for liandry's makes sense in the end you get more AP. Maybe its the magic pen? but some OCD side of me hates to see n part of this item being 100 more but the total price is 100 less than Liandry's :D