User blog comment:Andrew.heo1/When to Get a 3rd GP10 Item on a Support?/@comment-46.249.166.204-20120815155756

Pro tip: Usually it's not your job to buy Aegis, you should focus on other, better items like Zeke's Herald and shurelya's.

With gp/10 quints and seals and 2 gp/10 items you are set for life.