It may be a poor deal on the buying end. But that does not make it a scam. Actual fraud is a required element for something to be a scam.
Where is the fraud in this deal?
I have to agree. There is no fraud involved in offering to sell a mini-rig for a ludicrous price.
Then you'd agree that Multi-Level Marketing is completely legitimate for that very same reason.
Right? Everyone wins in an MLM!

It may be a poor deal on the buying end. But that does not make it a scam. Actual fraud is a required element for something to be a scam.
Where is the fraud in this deal?
If you tell your buyer that the odds they may only make the money back in 1/1000th chance. Then there is no scam because you didn't misrepresent anything.
If you tell the buyer, hey you know what? I want you to buy this from me for 450k but I don't really think it will make you any cash up to that amount. Again that is not a scam.
If you tell the buyer, hey you know what? You will totally (for sure) make the 450k back. That is why I am selling it to you....

Then you might be misrepresenting an opportunity. Therefore creating unlikely expectations to take their money and run.
In either case, it is just "my opinion".