Many are some aren't. With the bundles especially the ones that are offering bigger discounts you're looking at something that is not moving well in inventory that is being paired with a desirable and compatible part. So you'll see something kind of odd like a high end CPU (R9 or I9 cpu) being paired with a mid tier micro-atx motherboard , they might put in a middling amount of ram as well, then it will be priced at a point where you're getting either the motherboard or the ram at about 70% off.
That said in a lot of cases it's weird detail stuff and if you sift through them you can lots of times find something that's a very good value for you and your use case.
Oh, I know about the bundles for sure. I've been looking at a 7700x bundle. Damn good deal. But as you said the pairing with a lower end board is how they do it. But at least for 399 USD, it's a damn good deal.
7700x
B650 mobo
16 GB RAM (6000)
That's all I'd really need for my use case. And it's definitely a better deal than the 7600x bundle at 200 USD.
I was more talking about how the op comment I replied to was upset about the exclusivity of the new 7600x3d at MC.
As far as I know they do ship. So it isn't like others won't be able to get their hands on one.
Think about it ... If Amazon sold it... It would still have to be shipped. Same for most market place sellers.