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Postal Arbitrage

walzr.com

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Re: Postal Arbitrage

#71

Has this person tried it? Doesn't Amazon shipping have to go to the billing address on the credit card? Being able to purchase on a credit card and have it sent anywhere makes it that much easier to use stolen credit cards.

Pretty sure if you buy something as a "gift" (which is what allows the inclusion of a message) then you can send it to a different address. I rarely use Amazon and never have used it to send a gift so could be wrong.

Re: Postal Arbitrage

#72
post #65

Last time I checked (a few years ago), it was cheaper to send letters and small packages from South Korea to Germany than from Germany to Germany. The delay was also not that big (maybe 1-2 weeks instead of 3-5 days). I already envisioned an arbitrage business for this: a simple page where people upload their non-urgent letters as PDFs, and I just print and mail them from Korea.

This is already a thing; political parties sending out their mass mailings from Poland to Norway.

Re: Postal Arbitrage

#73

Earlier quoted context omitted.

I'd love a napkin math calculation at this.

I did some napkin math on this as I recently picked up a 3D Printer and wondered the environmental comparison to print-at-home vs pick something up at the store and I was surprised. Had some help from Claude but "last mile delivery" is absolutely where the majority of the kWh is burned in the supply chain. Container ships use ~0.015 kWh per ton-km[1] and a car is ~1.35 kWh/km. If you go to the store and end up gettin…

> Not an expert though just saying it opened my eyes to how inefficient "last mile delivery" energy consumption is.

One of the oddities of home shopping and delivery is that it can be more efficient.

https://www.npr.org/2024/09/10/nx-s1-5020321/food-delivery-m...

> In 2022, researchers from the University of Michigan and Ford Motor Co. modeled a single 36-item grocery cart to compare greenhouse emissions from an e-commerce grocery delivery and a traditional trip to the store to get the same items. Gregory Keoleian and colleagues at the university's Center for Sustainable Systems found that using an electric vehicle to pick up groceries could cut emissions by as much as half, compared to a gas-powered vehicle.

> They also found that home delivery could be an even better option. That's because with a delivery vehicle, orders are often clustered, with a driver dropping off not just your groceries, but also hitting neighbors during the same run. "Delivery is actually going to be more efficient in general than driving yourself in a gasoline SUV to the store to pick up your groceries," Keoleian says.

The mentioned paper is https://css.umich.edu/publications/research-publications/car...

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https://www.epa.gov/greenvehicles/what-if-more-people-bought...

> A recent USDA survey found that in 88% of U.S households, people hop in their car to buy groceries, driving an average of 4 miles to their preferred store. ... All these car trips result in carbon pollution: over 17 million metric tons of CO2 come from car tailpipes just from driving back and forth to the grocery store.

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https://csanr.wsu.edu/how-do-grocery-and-meal-kit-deliveries...

> While it is common for the consumer to associate convenience in the food industry with increased greenhouse gas emissions, this is not always the case. Results from a 2013 University of Washington study indicate that grocery delivery has the potential to reduce carbon emissions anywhere from 20 to 75 percent (Ma 2013), while another study out of Finland found the potential for grocery delivery to reduce emissions by up to 87 percent (Siikavirta et al. 2002).

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https://www.nytimes.com/wirecutter/blog/shop-online-sustaina...

> Buying goods online can be better for the environment than in-store shopping for one fundamental reason: With online shopping, a single truck or van can replace multiple car trips, by multiple households, to stores. It helps to think of it this way: In most of the United States, almost every purchase means putting a vehicle on the road—either your own or a delivery company’s.

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Some others:

https://blog.sevensenders.com/en/ecommerce-carbon-footprint-...

https://web.archive.org/web/20250302115526/https://sustainab... (this one is quite comprehensive also including the difference in packaging)

And those articles come with their own citations to other articles.

Re: Postal Arbitrage

#74
post #14

Don't give money to amazon that is better spent on an amazingly efficient postal service. Amazon is subsidized by imaginary money until they put all their competition out of business(including USPS).

My honest question is: If you pull shenanigans like this, isn't it actually making Amazon burn through said imaginary money, thus hastening its demise? The cost of delivering a potato has to be on the order of at least a couple dollars.

I don't think Amazon is losing money. It's really just that efficient.

E.g. an Amazon van rolls through my street multiple times a day. What is the marginal cost of them stopping at my house and dropping off a potato?

Re: Postal Arbitrage

#75

Has this person tried it? Doesn't Amazon shipping have to go to the billing address on the credit card? Being able to purchase on a credit card and have it sent anywhere makes it that much easier to use stolen credit cards.

You have to provide the billing address for the card. But you don't have to ship there.

Plenty of people ship to the office. I buy stuff for my parents from time to time. When I'm on vacation, I might ship to the hotel or a friend I'm visiting or ...

Re: Postal Arbitrage

#76
post #18

Earlier quoted context omitted.

I checked the lime listed and it seems to be a regular amazon prime item for me (norcal) and not the grocery you described, which we also have.

Did you press the buy button? The shipping fee is $2.99

Ah, you're right. Sneaky.

Re: Postal Arbitrage

#77
A more recent question I have is how Amazon is skipping DeMinimis fees which are now massive on 50 cent or $1 items from their "Amazon Haul" which come from overseas

It arrives in a few weeks by Amazon's own carriers, not USPS/UPS/FedEx

Who is paying the $80 DeMinimis fee on the $1 cable I got last week from China?

Re: Postal Arbitrage

#78

Isn't postal arbitrage how the original Ponzi scheme started?

Indeed. Ponzi attempted to buy International Reply Coupons in countries where they were cheap, then exchange them for stamps in the US and sell the stamps for much more than the purchase price of the IRC.

Of course, it didn't work. There wasn't anything fundamentally wrong with the arbitrage scheme, but the profit per coupon was way too low to make it feasible as a business. Ponzi pivoted to paying off older investments with new investments, and the rest is history.

Re: Postal Arbitrage

#79

A cheaper option (if we’re going to do away with the restriction that the post card should be sent by the sender) would be for the recipient to hook their printer up to the network, and just send bits. It is better, actually, you can even scan a real hand written post card.

owning a printer is never the cheaper option.

I think it depends. I bought a Dell 1700 laser printer for the low price of $0 at a second hand store about 19 years ago. They said it was failing to pull paper from the tray, and I could have it if I wanted. I fixed the rollers responsible for feeding (turned the rubber wheels inside out), and used it for another 10 years without issue. Sure, toner costs some money, but an off-brand toner cartridge is $25, rated for 3000 pages. I have also needed to replace the drum, and at one point picked up a second 1700 into which I had to put the old drum and toner after some failure or another.

I'd estimate I've put in $200 at most, and probably put 15-20k pages through it. Still prints just fine. It doesn't have color, or networking features, but I can share it on the network from the connected computer. I'm not sure they make anything this reliable these days, but I bet there's quite a few old laser printers floating around still.

Re: Postal Arbitrage

#80
> You're not only saving money.

That's right, you're also cementing Amazon's control of the US economy. Both by doing more business there, and by spending time on that site which will lead to you doing even more of your business there. Not to mention having to be an "Amazon Prime" person to begin with.

This may sound weird to some, but - you should really avoid using Amazon where possible.

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