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Postal Arbitrage

walzr.com

41–50 of 293 posts

Re: Postal Arbitrage

#41

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).

Can you explain? Amazon is wildly profitable, and while AWS is far higher margin than their retail businesses, everything I can find suggests their retail segment also has a healthy operating margin.

Re: Postal Arbitrage

#42
post #16

Earlier quoted context omitted.

The oil used for shipping from Shenzhen to Long Beach is completely trivial compared to what the truck used getting it from Long Beach to Pasadena.

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 getting >10 things it becomes "worth it" from an energy standpoint. Anything less printing at home seemed to be more economical... Not an expert though just saying it opened my eyes to how inefficient "last mile delivery" energy consumption is.

[1] https://www.withouthotair.com/c15/page_95.shtml (old reference)

Re: Postal Arbitrage

#43

This story comes to my mind. A pizzeria owner made money buying his own $24 pizzas from DoorDash for $16 https://www.theverge.com/2020/5/18/21262316/doordash-pizza-p...

If you want to fight the VCs, you have to pull stunts like this. If they want to destroy local infrastructure because "free market", in an attempt to secure monopolies for themselves, then let them operate in a free market.

VC Fund My Life!

Re: Postal Arbitrage

#44
post #16

Earlier quoted context omitted.

The oil used for shipping from Shenzhen to Long Beach is completely trivial compared to what the truck used getting it from Long Beach to Pasadena.

I'd love a napkin math calculation at this.

https://climate.mit.edu/explainers/freight-transportation

> While nearly three-quarters of the world’s cargo is carried by ocean-going ships, road vehicles like trucks and vans make up the majority, 65%, of freight’s emissions. Most ships burn fossil fuels and emit carbon, but they carry large amounts of freight at the same time, making them the most efficient way to move cargo. Road freight, however, can emit more than 100 times as much CO2 as ships to carry the same amount of freight the same distance. Road transport is also a fast-growing sector—80% of the global increase in diesel consumption can be attributed to trucks. E-commerce and home delivery are two reasons for this growth.

Re: Postal Arbitrage

#46
To the author, would you consider changing the “key photo”? I sent the weblink to a friend, and the key photo in iMessage is the pregnancy test and they got the wrong impression about the site/prank. Pick the lemon or can of beans perhaps?

Re: Postal Arbitrage

#47
post #14

Earlier quoted context omitted.

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.

Amazon will close your account before you can impact their bottom line.

I think they let you (not YOU necessarily, but the proverbial you.) get away with stuff because they know your habits and you probably make more money for them than you realize.

I can almost guarantee that everyone mentioned in that blog post is a habitual Amazon user. They're all renewing Prime each year at full price and making a ton of regular purchases. The family has even turned on the FOMO by making Prime a family social network with social pressure to stay. I see it as a self-own, personally.

Edit: I'm taking part of this to the root of the thread

Re: Postal Arbitrage

#48
I can almost guarantee that everyone mentioned in that blog post is a habitual Amazon user. They're all renewing Prime each year at full price and making a ton of regular purchases. The family has even turned on the FOMO by making Prime a family social network with social pressure to stay. I see it as a self-own, personally.

Re: Postal Arbitrage

#49
post #16

Earlier quoted context omitted.

The oil used for shipping from Shenzhen to Long Beach is completely trivial compared to what the truck used getting it from Long Beach to Pasadena.

I'd love a napkin math calculation at this.

The distance from Shenzhen to Long Beach is some 300 times the distance from Long Beach to Pasadena, depending on where exactly in Pasadena and which route you take. The CO2 emissions factor for a truck is some 10-100x that of a container ship. The exact ratio depends on what kind of truck, and what scope of emissions are being included. The more one accounts for, the more it will favor the boat. But overall, the emissions from the oceanic leg of the trip are probably anywhere from 1-3x those of the truck.

Re: Postal Arbitrage

#50

Ah, luckily the climate doesn't mind that oil was extracted, a phone case was produced out of it, shipped from China, to end up not even being used but just as a "greeting card". Why yes, I am fun at parties.

I'd send a free text message to a family member, offering them money in exchange for them not sending me trash from Amazon.
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