Does anyone know a place that does better? - re: exhaust

I have been stewing over one of ISPWests 'over the top', mufflers,

http://cgi.ebay.com/ebaymotors/VW-ISP-WEST-TYPE-3-EXHAUST-MUFFLER-SYSTEM-OVER-THE-TOP_W0QQcmdZViewItemQQcategoryZ6755QQihZ005QQitemZ150122946904QQrdZ1QQsspagenameZWD1V

This will end up costing around $290 aus delivered to the door.

My question is... is there a Melbourne or Australian based company that can provide a similar muffler for a similar or better price?

Anyones experiences would be appreciated.

Cheers

PC