[Arran]

Oh you can work with or around the vibrator power supply, but I think that whomever paid $81.49 for that 624B, plus shipping, is not going to be very happy when they find out that they the set they just bought involves an engineering project just to use it. You can buy a 620B or a 630B for the same amount, often less, with no reverse engineering involved. That set, in that condition, along with the rough looking 623B that sold recently, should not have broken the $40-50 mark, if more people would do their research first and not impulse buy they would not have. Those sets would be $10-30 at a swap meet, and even then they may just sit there.
I can still recall the 623B, a full on battery set, that someone had bought off of fleabay last year not realizing what it was for some reason. Even though the auction said that it was a model 623B and had photos of the back with a battery cable in plain view, he was enraged at having bought a farm set. He then resold it on fleabay to one of our members at a loss apparently, stating that it was only good for parts. This is all nonsense of course, it's not difficult to make a battery set operational, but you still don't want to pay an AC radio price for a set that needs an off board power supply constructed for it.
Regards
Arran