Periodically I see threads like this...
And my opinion is - much like ticket touting at concerts / gigs - looking for more than face value for books about GCA is against certain values I hold... I have never looked to sell a concert ticket for more than face value no matter how difficult they are to get hold of (maybe because it's illegal)... Likewise, if I had unwanted GCA books, I'd look to pass them on to fellow GCA fans for minimal cost if anything...
I have been lucky enough to be the recipient of kind offers this way, most recently Mark Chaplin sending on Patric Dickinson's book... Whilst I understand this ebay person may not be from this board, I'd like to think any threads directly trying to sell books for more than face value would be banned by Ran in the future... Against the spirit in my opinion... but each to their own I guess...