I started looking for a copy of The Ratmen of Rodencia this morning and realized that there are really no Mandrake reprints in the US (or England for that matter), apart from the short-lived King Series. If I want to get this in English, I only found an Indian reprint. Is there a reason for this?

Assorted covers to make you wonder why there are no US/UK Mandrake reprints (featuring the most wonderful non-Mandrake looking Mandrake Turkish cover I have seen for the moment):