Who is going to pay?

The First Minister has alluded to running an alternative referendum if the UK Parliament doesn't acquiesce to her wishes of a proper legally binding one. 

According to Scottish government figures, the vote in September 2014 cost £15.85m, or £4.38 per voter.  Where is Nicola going to find that sort of money? 

She surely wouldn't ask the taxpayer to fund a vote that had no legal standing and was actually nothing more than an opinion poll for a political party.