Must be this place:
JetFighter Rides - Australia's Advanced Jet Fighter Operation Hunter Valley-Matty Johns Show
Seems to cost $2k for 20 minutes, which is a bit over the odds I think. Would have expected $1,200 to $1,500 an hour.
Allowing for time to take off, climb to 8,000ft, descend and land, there is not much time left out of 20 minutes.