Show HN: Daily price tracking for Trader Joe's • Hacker News Board

Re: Show HN: Daily price tracking for Trader Joe's

#11

Post by cmoog » Thu, Feb 08, 2024, 5:29 PM UTC

rconti wrote: post #3

This implies the prices are the same across all TJs stores - is that the case?

Good catch. These prices are hard coded to my local store in Chicago. Soon I will add support for selecting your local store.

Re: Show HN: Daily price tracking for Trader Joe's

#12

Post by thaumasiotes » Thu, Feb 08, 2024, 5:29 PM UTC

rconti wrote: post #3

This implies the prices are the same across all TJs stores - is that the case?

It would be shocking if it was.

Re: Show HN: Daily price tracking for Trader Joe's

#13

Post by cmoog » Thu, Feb 08, 2024, 5:29 PM UTC

pphysch wrote: post #4

cmoog wrote: post #2

Source code here: https://github.com/cmoog/traderjoes

I love this pattern of making tiny but powerful analysis tools with SQLite + a couple scripts.

And with Haskell and Nix at that!

Re: Show HN: Daily price tracking for Trader Joe's

#14

Post by crazygringo » Thu, Feb 08, 2024, 5:29 PM UTC

rnadomvirlabe wrote: post #7

Is this for one store or all stores? It's commendable that you posted your code, but a minimal README would be appreciated. Looking through your code, I see that the default store is Chicago South Loop (701). This would be helpful information to include on the website displaying the results.

Trader Joe's prices are famously the same across all stores.

So that shouldn't be an issue.

Re: Show HN: Daily price tracking for Trader Joe's

#15

Post by [deleted] » Thu, Feb 08, 2024, 5:30 PM UTC

rconti wrote: post #3

This implies the prices are the same across all TJs stores - is that the case?

[deleted]

Re: Show HN: Daily price tracking for Trader Joe's

#16

Post by crazygringo » Thu, Feb 08, 2024, 5:32 PM UTC

rconti wrote: post #3

This implies the prices are the same across all TJs stores - is that the case?

It is the case. It's kind of a famous quirk about their stores, that prices are identical nationwide.

Re: Show HN: Daily price tracking for Trader Joe's

#17

Post by graphe » Thu, Feb 08, 2024, 5:35 PM UTC

azemetre wrote: post #5

Interesting! I’ve always held on to my grocery receipts for the last 8 years. I took pictures of them but when I moved a box got water damaged so now I only have like the last 3ish years. Is there any open source software that I can use to transfer these receipts into a useful csv? I have an idea for a few interesting data visualizations as I’d often buy the same things every week. Grocery bill went from like $70 to…

https://docs.paperless-ngx.com

Nextcloud also has OCR. You can use a scanner with either.

Avoid touching the receipts. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5453537/

Re: Show HN: Daily price tracking for Trader Joe's

#18

Post by graphe » Thu, Feb 08, 2024, 5:36 PM UTC

brianwawok wrote: post #9

spondylosaurus wrote: post #6

Pleasantly surprised to see about as many price reductions as price increases. Also funny that they marked up the price of roses ahead of Valentine's Day!

Why is it funny prices rose as demand increases? That’s Econ 101 expected behavior

iPhones dropped in price as demand increased. Demand isn't as important as marketing, and this is probably supply limited rather than demand.

Re: Show HN: Daily price tracking for Trader Joe's

#19

Post by orange_county » Thu, Feb 08, 2024, 5:39 PM UTC

How are they getting the prices for these? Is this run by Trader Joe’s? I hope someone isn’t manually updating these.

Also won’t prices differ by location? So many questions.

Re: Show HN: Daily price tracking for Trader Joe's

#20

Post by screeno » Thu, Feb 08, 2024, 5:41 PM UTC

brianwawok wrote: post #9

spondylosaurus wrote: post #6

Pleasantly surprised to see about as many price reductions as price increases. Also funny that they marked up the price of roses ahead of Valentine's Day!

Why is it funny prices rose as demand increases? That’s Econ 101 expected behavior

Except for a the obvious counter examples. Like food in general very in demand and very cheap. Housing very in demand but very expensive. So it’s really more about who decides the prices than what.