I never use auctions in my store, though I could if I wanted to. I only have a few listings over the 600 and I've been using the extra freebies to end and relist the extras. I have a few spare this month so I'll just have to be careful to only end and do SS on the single quantity ones. I'll experiment with the others though - I've got a few brand new listings scheduled so I'll watch the counter when they go live.