Dongle for Bell Fruit Machines

Hi there All, 

Wondering if anyone can shed any light on this, I know that I am going to get shouted at for this but I really want a BFM Winfall Fruit machine, no idea why, I just want one.

I understand that the newer machines now need a dongle to run, anyone have an idea as to how much these dongles cost and how long they last?

Thanks in advance all.

TC