How to (maybe) purchase Pokemon Scarlet/Violet NIB with all DLC on cart

DISCLAIMER: This is non definitive information on how I purchased sealed SCARLET/VIOLET with DLC on cart and do not offer any guarantee that any of this information is reliable or accurate. Use at your own risk.

In this sub, I asked how to identify cart with all the DLC on it, just from the packaging. This took my down a rabbit hole of research and ebay analysis. I'll provide the links below. A lot of the info is incomplete as its community driven information gathering.

After reading through this information I identified some consistency in the scheming on the back of the box and on the back of the cartridge.

This is what I just recently did and made the purchase based off this info. Recieved in the mail today (17 Mar), both are on ver 3.01

TL;DR - Look for the strings above the barcode on the back of the box:

[HAC R ALZXG MSE - TRA-HAC-ALZXG-MSE] FOR Violet

[HAC R ALZYG MSE - TRA-HAC-ALZYG-MSE] FOR Scarlet

The code on the front doesn't matter outside of identifying game/region.

The printed code on the back of the cartridge(usually in gold, best viewed at an angle) DOES MATTER, as it historically has provided what rev its on.

I'll see if i can post pics, but for example a version with just part DLC on it; code on back is

ALZYG41A001 (001 for rev 1)

a more updated version mighy end in 004 for example, for rev 4....HOWEVER

The ones I recieved in the mail have:

ALZXGY0A04517 - SCARLET

ALZYG60A04516 - VIOLET

I don't know these have changed format, as I'm just stumbling through this myself.

Anyway. Take this all with a grain a salt, as its my best educated guess and it worked out for me. If you can make any of this clearer or have more information, please add!