The problem with Cromster - is that typically in english - when you ad "ster" at the end of a word, the word your adding it to really needs to be "real". What is a Crom?
For example - the domain name Comster, would hold value because it has the word "com" it implies that whoever owns the domain name is into .com's or even companys. Although Cromster is pronounceable, it lacks any signifigant meaning. Is it brandable? Sure... but not nearly as much as Comster would be.
Simply because something can be branded (almost anything can be with the right amount of time and work) does not make it valuable. This is a registration fee domain name at this time.
Justin