I got mine via this great community, first the base unit then some pods. I would go with Elgen's advice. I think the prices on Ebay are way to high..... I mean for me that is, it is a hobby not a business and these units are really old. I just use them because I like to play around with these old school electronics and to lecture my kids a bit when they get older..... That is if they are interested

When you are in the repair business you can maybe earn it back very fast so then it is a different cookie
Except for arcade enthousiast are there any other people interested in these units?