Hi Mick
I can see why it might seem like that, but there are lots of factors in determining the final price that may not be obvious.
On the whole, you'll probably find that more is included in the basic price of a Just You holiday. One example is that in Australia Just You gives you breakfast every day plus a number of your lunches and dinners, which would explain some of the price difference here.
As you say, the biggest advantage of travelling with Just You is that you will be with other single travellers, whereas on a Travelsphere holiday the majority of your fellow travellers would be couples.
Kind regards,
Olly, your editor