Void Staff and Rabadon's Deathcap build paths

Can we talk about these two items please? Building them is embarrassing tbh. Both recipes require to sit on a pretty huge pile of money to be able to complete them. costs 1365 to combine, and requires 1265. Those are the two most expensive recipes in the game, followed by , , all sitting at 1100. Honorable mention goes to at 1050. All those items could also be looked at.

Anyway, the AD counterparts , are easier to build, costing around 600 each.

I suggest adding two tier 2 items. For Rabadon's it would be something like 60/80 AP and 20% AP increase ( / + +gold), and for void staff it would be an AP version of with stats like 40 ap+20% mpen ( +gold).