How much???

So Trump is coming here for three days starting next Thursday at a cost of £30m.  It's not clear who will be footing the bill, 'though I've a nasty feeling it will be us.  His itinerary appears to have been designed to keep him away from London, and indeed the poor Scots seem to be bearing the brunt.  I assume somebody has done the maths and reckons it's worth it.  Personally I would rather he didn't come, but there you are.