Try these guys:

http://www.bluejeanscable.com/

You don't in fact have to spend a ridiculous amount on cables, either for speakers or interconnects. The audio world is full of companies which will inflate the influence on sound quality of some items like cables in order to make money. Don't fall into that trap. In reality, any good speaker wire of sufficient gauge (preferrably 12 gauge) will do the job perfectly well.