Heh. Company I used to work for almost bought that contract. Based on what we read on their homepage and some initial talks the thing they where selling was perfect for us and we were basically ready to cut them a check for $~10-20k and possibly quite a lot more over time. However the more we talked with them and the more we started asking to actually be allowed to test the full capabilities of what they where promising the more it became obvious that they where full of shit. Eventually they just admitted to us that they'd straight up lied on their homepage.
The funny thing was that they then asked if we wanted to become investors in their company so that they could afford to possibly build the thing they had been trying to sell us.
I said that we had to build the thing for real, and he replied, "I'm just looking for someone to take over the WordPress work."
In actual practice, this is the top method for producing vaporware.