"end of" means "that's the end of the discussion about the matter -- the final word". Depending on what was in the author's mind, it may specifically be short for "end of story", which is a set expression with that kind of meaning.
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CliveUsing just 'end of; like this is not a common practice,It's not a standard expression.Again, this may be a regional thing. In the UK, "end of" is a recognised (informal) expression of sorts.