Beat up hacked machines don't bother me. See the T2 I restored, and some others I've brought back from the dead. It's a hobby and fun for me to bring back machines from the dead and I don't anticipate much or any profit from these machines. If you don't have serious skills or funds to hire a tech I'd agree, buyer beware.
After looking at the sellers list I found 10 to 15 on his list that I would buy if they were local. I always anticipate anything coming from over seas is going to need at hundreds per machine to reverse the hacks and make needed repairs. After factoring in the shipping and the unknowns, it makes it a big gamble. I'm in for a few if someone local wants to go in with me on it. Roll the dice and I can report back here.
FYI I think shipping is free once you hit a certain amount of machines or price.