Some people may not have room for a trailer Mark,although I agree a tad expensive but I must admit that I would do the same if I have the spare moola, as I am a space poor kind of guy. Some times you pay more but get exactly what you require.
I would love to have a trailer but noooooo, I have been racking my brains about a custom built roof box as well, the sad thing is I may need to lift the carport roof by 2 course.
Hehehe owell, in the back of the Jeep for now and the wuife and kid will just have to put up with the all the gear on top of them

Cheers guys