Is the Apple Store on Amazon affiliated Apple?

I checked a bit further, and yes, Amazon is an authorized Apple reseller, though they don't carry the entire line of products. Also, this is restricted specifically to the Amazon/Apple page I linked to above.

You can otherwise find all kinds of Apple items on the regular Amazon site, but these will almost all be third party resellers of used products. Some are marked reconditioned (tagged as Renewed), but that is cleanup is done by Amazon employees, not Apple.

From what I can see, it appears you can get some, but not all Apple products as new, fully warrantied items. But you have to specifically go to the Apple Store page on Amazon.

https://www.amazon.com/stores/Apple/page/77D9E1F7-0337-4282-9DB6-B6B8FB2DC98D?ref_=ast_bln

Depending on what you're in the market for, you can save quite a bit. Such as in the M2 mini line, you have three choices. On Apple's site, the middle preconfigured choice is $799. But on the Amazon Apple page, it's currently $699. Which may be a Black Friday special.

Note that you can't get a Mac Pro or Mac Studio there.

Remember that you are not asking Apple in this forum setting. As your fellow end users we cannot give you an "official" answer, only what our observations and personal experiences reveals

For computers, personally I do not think the cost savings from any such "partner" sites is worth the risk of getting a computer that is already superseded, under-equipped, or pre-owned. When I've wanted to save some money on a Mac computer, I first head to Apple's online refurbished store:

Certified Refurbished Products - Apple

That is the ONLY source of "certified" refurbs. If the model is a previous one, the description is clear what you are ordering.

The refurb store is not for those needing instant gratification. Once i decide the model and option level I need, I monitor the site to see what comes up; It can change hourly.

If your understanding of Apple tech specs as they affect model changes is high, and you can "read between the lines" to see what model a non-Apple seller is really offering, give Amazon a go.

I will concede that these caveats are primarily about computers, phones and iPads where options and model years are important. Things like Airpods, HomePods, Apple TVs etc, where options are less critical should be OK from most established sellers.

What does having a seller account somewhere have to do with the original question?

Apple has their own return policy and you can return items for 14 days if you bought them direcly from Apple. After that, the warranty is in effect and it will be repaired if necessary.

Amazon is an independent retailer and has their own return policy - Apple product or otherwise.

I have seller account

Apple does not honor returns the way Amazon does. You have only 14 days to return Apple products. If you bought an Apple product that's not under warranty for Christmas and you get around to trying to return it after the holidays you're probably out of luck, even if it is defective and completely useless. Lessen: You can buy their hardware but buy everything else another place. It will probably be much less expensive anyway.