Let's say this is $800
That's when you negotiate 30% off for Black Friday or Cyber Monday... or the weekend in-between (already applied). Now it's $560
Now you tell them you want 25% off for it being open boxed... Then you tell them that because it is already opened you want 15% more or 40% more. Now it's $336.
Finally, you explain that a keyboard will surely cost at least $150 for the part and 1 hour labor, so $186 will be fair.
You take it and get a new keyboard free of charge from the manufacturer being it's under warranty they mail it out to you... and you do a clean install of windows.
If we say it is a quality $800 laptop and you are a smart technical person that is good at negotiating, this could be a good deal. What avg non technical customer is going to look at this display model that isn't functioning and has keys missing and decide they want to buy this over similar priced models that are working with nothing missing? Even though they wouldn't be buying the display model, I'm surprised they would have it on display like that and expect to sell any of them.
I know I didn't include the price or specs in the pictures, but in reality this is just another one of those cheap $200 windows 10 laptops with a 32 emmc hard drive that nobody should be buying even in good condition. I'm sure it crashed because it ran out of hard drive space already.