how much money do you guys make from kleptomancy?

I've played quite a few matches with heimer and teemo top using klepto, and before the nerf, i would get no more than 550 gold for a 30min game, and after the nerf only 300. so considering how the spellthief items can earn more than triple of that, making the klepto look kinda weak for money making?

so what do you guys think? how much money do you make from klepto in a 30min-ish match?