My 9 year old DD wants a space scooter for Xmas and the cheapest i have found is £99. 7 year old DS would like a sparks one which is considerably cheaper (around £35). The combined amounts are really as much as I want to spend on main presents but is it mean to spend more on DD? For the past few years they have had exactly the same main present but I just think that DS won't know how much we've spent and as long as he gets what he wants does it matter?