DoT!! That used to be my favourite limited game. It all started a rainy day in March back in 88. Little did I know that there would be 5 more years of limited games before it dropped.
There was some others in between but they were spread out, commando style.
Seems fishy to me. But they are saying to message them for more info.
Maybe theres some local club or makerspace where you could ask if anyone have a reader they can lend you. If its just a few carts and a one time job that would be enough