If you really care about how much your spending on repair cost get an indestructable item set. I'm payin about 20k to 30k repair bill if i repair after i die but if i wait tell I finish the blue team it drops to about 9k instead. I have died three times in a row. I die so i can lower the health lvl of the the blues for my party members can finish and get better items hopefully. I think if blizzard every makes ilvl 64 items to make them pure legendary and indestructable every time. It would be end game reward to never have to pay a repair bill again if you get a full set of items with them.
... or just slap on some GF and rip through ActIII. Honestly, it's not like gold is hard to come by... but if you're struggling in inferno, you'll probably need to take a gold-farming break every now and then (assuming the loot-gods are picking on you).