Ditto to OZzy.
Tell the store clerks what you want, size of family, duration of camping, etc.etc. and they will show you waht they have.
Not sure if you guys have Ranger Camping over East but that wold be my first port of call ... if you like what you see try and haggle them a little ... they'll usually drop 10% or more if they like you ...
Also, if you buy a fair bit of gear from them they WILL drop their price. Hell, they even give me free bait! :wink:
You did well convincing the wife to go camping in a tent ... a lot prefer caravans and they DON'T come cheap!