User blog comment:Dj0z/Dj0z' Tank Lulu Guide/@comment-5045559-20120504010215

Little extra math for this build: as long as you have, and don't upgrade, Philo and Hog, you effectively gain 1590 gold per 10 minutes, on top of any cs/kills/assist/dragon/baron/towerkill.

Assuming you rush the Gp10 items as recommended, which i usually achieve pretty early, probably at 8 mins or so i guess, that means by the 31 minutes mark you're guaranteed to have Chalice (890g), Giant Belt (1110g) and Glacial Shroud (1525g), which are the core items. Assists/Dragons/Towers/cs easily pay for the boots. Even without any of those (which is pretty much impossible) you'd get Warmogs (+1890g) 12 minutes after.