Okay, I am thinking about buying this as my first machine. I posted earlier in the thread and anon said to get a 110/220 multiprocess unit. I came across this lincoln on market place for $550. Apparently it's brand new in box, but it retails for over $1000. Seems almost too good to be true. If I go check it out, what should I be looking for? Or should I just get a new machine with a warranty?