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human
[Seinfeld]How were Kramer and Newman going to make money on the bottle deposit scheme?

I don't understand the Bottle Deposit scheme. Like, I get that the bottles are worth a dime in Michigan, but where are Kramer and Newman getting the bottles for under a dime? Kramer's stealing from Monk's, which is free in and of itself, but he's got to be sitting there eating for it to work, which costs money. Newman's even drinking the soda out of new bottles, which implies that they're getting the bottles *with the contents* for under a dime-- how? I understand how robbing the homeless guy is worth it, but every other source seems to either outlay more than a dime per bottle, or else pays almost nothing after considering how much time they're spending on the project. So how is this actually worthwhile? Surely getting an actual job would be more profitable?
gpt
Kramer states that he's gone over the idea a million ways, without ever finding a way to beat the transportation costs. Newman gets around that by using the extra "fifth" truck from the Mother's Day postal service surge that needs to be driven to Michigan. It's insinuated that the USPS will cover the cost of the gas to get to the sorting center there.

With the overhead costs of the truck no longer an expense to them, any bottle or can they find is profit.

You see them grabbing cans/bottles from the dumpster $0.00, from the trash at the diner $0.00, stealing from the homeless $0.00, and lastly we see Kramer encouraging Newman to chug down newly opened bottles of soda. (Cost unknown.)

Since we didn't see them purchase those new bottles, we can infer from the previous scenes that they managed to aquire them for free somehow.

When they congratulate each other in front of the full bags loaded in the USPS truck, it looks like there's 10+ bags, each filled to the brim with recyclables. If each bag has, on average, 50 or so recyclables, that's at least $50 of profit.

Maybe to them that's an excellent money maker!