Our sim is £140 per hour inc VAT - less than half the price of the aeroplane (£305). I would be surprised if it's any different elsewhere.
Not only can you get two for one price-wise, but the hour in the sim can actually encompass a lot more training than an hour in the aeroplane. You always get the runway and approach that you need, a quick reset saves time between approaches if required, a freeze can provide a few moments for a hot debrief etc.