From the announcement:
I am doing a charity event for MacMillan in August and I have some prizes to raffle off as part of it. But one is a one of a kind prize and as such I wish to have a 'silent auction' for it everything goes to http://www.justgiving.com/WAAC/
The prize is Nick Kymes (black library) sample copy of Promethean Sun signed by the man himself. There are very very few copies of this in existance! So rather than ebay it I am offering in selected places. Highest bid wins in a time frame of say end of June.
Please bear in mind what the one of 3000 goes for on ebay and that everything goes to charity!