1000$ is a lot of money to spend on an unknown, in my book. I guess that just depends on your tolerance for risk.
For instance, I'm happy to blow 20-30$ on a power tool at a swap meet where they can't plug it in but they tell me it works.
But if it's 300$, I'd likely not do it. That's a lot to get home, plug it in and get nothing.
If you're friend has any concept at all of vids and their worth, though, the risk would be much less. If they open the door and he can step inside and realize that all the guts of the machines have been stripped, and realize what that would mean to the value of the machines, you'd probably be ok.
Or ask your friend to do the "other thing" for you so you can go to the auction
