Where is the option to "Keep the machines regardless of the offer" ? Why sell them ?
As long as the original sale to you covered all the additional costs, then I see no issue. An offer is an offer. The prospective buyer that made the offer should have done a bit more homework.
I have been offered crazy money for some of my games. But I don't want to sell them. Took me years to find them, so I intend on keeping them.
