Grob Driver, as they say , if you have to ask you can't afford it.
From my looking around (and experience) the costs for pouring a tank of fuel down the Jet pipe appear to be
JP £350
Hunter £2000
Lightning $9000
And all of them seem to run out of fuel after about 40 minutes of spirited fun.
For my money the gentlemans choice would be an hour in the Hunter (low level through the Valleys) then blow the rest of your cash in the Extra 300 /Sukhoi 29. Best value for money.