The fact that it was not off-the-cuff doesn’t mean he wasn’t kidding. I’d expect Richards to say something like that after deliberating, if he said it all.
Anyway, I keep wondering is Keef’s mother is alive. If she is, what the hell is she thinking about this?
Personally, I think that it just adds to the man, the myth, the legend that is Keith Richards. So I’ll continue to believe it no matter how much they deny it. It’s just too good of a story.
Over an unspecified period of time (I don’t know Keith’s rate of intake) I’m sure you’re right.
If he cut the cocaine with Dad at 2/1 this would save Keith the necessary expenditure to score an extra 5lb of the stuff. 5lb equals 2,268gm and so, at £40 per gram (current street value) Dad would save Keith the princely sum of £90,720.