The rake on these appear to have been "Normalised" now
Tonights game is a £7.50 + 75p buy in with £1500 added and 316 entrants
(£7.50+£0.75)x316 = Outlay of £2607
£7.5x316 + £1500 = Prizefund of £3870
(£3870-£2607) / 316 = £4 added per player (over 50% of buy in)