Avengers Twilight is a mild hit in the after market. Recent sales have been in the range of $10 and up with most in the $16 range. We have a spot where you can get them well less than eBay prices:
Mycomicshop currently has copies of Avengers Twilight #1 for $7. These will not last long as word gets out that the book is not only a great read, but selling for more than cover price.