Youve turned down the imaginary £8000. Was that a wise decision?

Box 15 contains: £50!! Another blue sum of money!! An excellent start to this round!!
Box 6 contains: £100!! This is shaping up to be an excellent round!! One more blue and well be looking at an enormous sum of money from the banker!!
Box 10 contains: £3000!! *audience cheering and whooping* Not a blue, but a very low sum of money in the grand scheme of things!!

THE BANKER SAYS: YOURE PLAYING A VERY LUCKY GAME, BUT REMEMBER. THERE ARE ONLY A CERTAIN NUMBER OF BLUES, AND INEVITABLY YOU WILL HIT SOME OF THE BIG NUMBERS. THE OFFER FOR BOX 7 IS £27,400

£27,400 Martyn... deal or no deal??