You could be right - with Prince a lot of stuff that can seem like being about money, is really about artistic control.
You know what would be incredible though? Prince and 3rd eye girl in the John Peel tent.
Anyway - if you get so much as a half chance to see him in London, try your best. It will be interesting to see if there's any pattern at all to these shows, e.g. if he'll always look likely to be playing a second night at a particular venue like he did Tuesday / Wednesday.
If I thought there was a fair chance of something like that, I'd be tempted to make the three hour journey down to London to them again.