Today I found The Wind on Fire Triology by William NIcholson.  I have all 3 books:

The Wind Singer Slaves of the Mastery Firesong

All three books are in good condition.  I wanted to give someone an opportunity to pick up all 3 books (3 credits, one credit for each book) before posting them on my bookshelf and them probably getting split up.  If you are interested in them, please PM me.  I have not posted these on my shelf yet.  I will post them on my shelf tomorrow if no one lets me know that they want the whole trilogy.