Full Throttle is going to be my next game, and I plan on putting an Alien playfield in it. The concern I have with buying a used one is Andrew has stated existing FTs will need new hardware to run Alien. I don't know what that will cost and it definitely eats into the cost savings. Plus, the fact that the original owner paid for shipping from UK doesn't help the new buyer since they will replace that cost by paying for shipping from original owner.
I love Full Throttle and I can't wait to own one, but I need to know I'm getting enough of a discount to cover the new hardware, shipping, and the fact it's a used game rather than new from factory.