There is almost always at least one copy for sale on eBay at any given moment. However, they sometimes go for outrageous prices. The highest I've seen was $600.00! Usually they sell on eBay for around $150.00 or so. That is often a better deal than you would get from a used book dealer.
In regards to Magic Man Examiner, I've only seen one set for sale on eBay and I think they went for about $90.00.