He upgrades his allies items at level 13... 14...15 ...16
He is not trolling just because his upgrades at level 12. Trust me, if he could give you 1k gold at level 6 when you finish your first item, he would.
I really think everyone should atleast know this about his kit, but I run into people almost every game that are super fucking confused.
Maybe riot could add a tooltip to the items in the shop?