Good luck and be ready to pay a loooot for IJ.
I know. 2 years ago you could easily fetch one for 2000,- EUR. I have been offered a perfect conditioned one for 3800,- EUR. On Ebay there are ridiculous sellers asking 4500-5000 EUR. Thats definitely way too much.
I don't think it will get cheaper within the next years. Seems there is an increasing demand for pinballs in general and in special for "the ususal ones" (Indiana Jones, Adams Family, Twilight Zone, Star Trek TNG,...to name a few).
Right now you should be able to get one for 2800 - 3500 EUR - depending on condition. We'll see. MY time will come