£70k per hour is the total cost of operating a Typhoon, including R&D etc, not the marginal cost of running the thing (fuel, servicing etc).
Are you seriously saying that it's cheaper to keep an aircraft carrier steaming up & down the Med, with 1000 people supporting 6 Harriers, and the ship escorted by other ships & at least one RFA, than it is to keep several hundred RAF people in some fairly mediocre hotels? The carrier may already have been paid for (although you include a portion of the purchase cost of the Typhoon in its cost) but it's still an expensive piece of kit to operate.