I was only considering that the prices of used orion blue books on ebay are pennies on the dollars compared to the cost of new ones.
I wouldn't want a new book anyway.
Say you get a 'pro audio' book on ebay for $25 that was issued in 2000. It will have vertiually everything in that catagory back to the 70's at least. If you buy a current run of the same book you'll spend $150 easy, only to have the years from 2001 up to last year, which for me is pretty useless anyway. I used to spend hours reading those books and used them quite a bit for pricing gear, up until ebay and general w3b pricing showed up. But their detailed info always kept me amused
That same notion goes for all orion catagories. That's all I was suggesting Up.