Can anyone recommend a reasonably priced cage that actually fits the load area without having to remove the luggage cover?

Barjo engineering will make custom cages to fit the space you want, they also have a range of standard ones in different dimensions... reasonably priced...? well they are not cheap but well made and I would consider good value... www.barjo.co.uk Space is quite restricted with the luggage cover unit in place because the slope of the back window eats into space..

http://briskoda.net/forums/topic/201727-dog-cages/

Didn't you ask already?