Castellorizo in Bud's Big BlueBud's Big Blue
Sadly, none of these are used. Used examples, if authentic, are expensive, as are the earlier overprinted French stamps.
Big Blue '97, on one page, has Italian issues from 1923-1932. There are 20 stamp spaces. The 2011 Scott Classic Specialized catalogue, beginning in 1920, has 36 major descriptions for French issues, and 49 descriptions for Italian issues after 1922. Overall, Big Blue has 24% coverage. If one excludes the French stamps (cheapest is $30+), the coverage for the Italian issues is 41%.
Like most small population island issues, the mint stamps are cheaper than genuine used stamps.
Castellorizo Blog Post and Checklist
Page 1 (Click and enlarge for examination)