£1000?! Christ, someones getting ripped off!
Rigs can be bought/made for WAY less than £1000. Hell, mine has barely cost me £200 (Not including the lens). I can build you a 14ft(optimum length) or 15/16ft boom for about £150
Built ours for £580, to buy a decent automotive rig you're looking 1k easily though.
I'm guessing by the way you mention 'not including the lens' when talking about rigs, you're main income lies elsewhere? We specialise in automotive photography, our rigs are on £££££££'s of cars, for some pretty big name companies. We cant skimp unfortunately!