Earlier quoted context omitted.
The last of those is at least a value-added service for some people.
I don't really see it as a scam: * I see an ad that says "do you want to buy this item for this price?" * If I like the price, I can buy the item. I got what was promised. The fact that maybe I could have bought the same item elsewhere for less doesn't make it a scam. Lots of things are offered at different prices in different places at the same time. That's not a scam.
It's not a capital 'S' scam in a legal sense, but it's a scam in that they are playing a trick on you by jacking the price way up and relying on your ignorance to make the sale at an inflated price.
If we consider a door-to-door salesman who is selling (say) basic Android phones in retirement communities where hypothetically some folks have never used a smartphone, they might get away with selling a $100 basic phone for $1000. That's not illegal, but it surely is a scam in the ethical sense.