I agree with dilimited. These days, auction style listings are best used as advertising for your fixed price and store listings.
Even better, try and source a couple of brand name items to use as these auctions, as they have even more pulling power.
The days of using auctions for the majority of your listings are over and done with. I'm noticing that all too often, items at a $1 starting auction price end up selling for a price that's way less than they are worth!
Anyone else got thoughts on this?