Are you subscribed to a basic store?
I would consider upgrading to a featured store since you seem to have over 200 listings, nearly half of which are in the collectible category - with a featured store, although the fee goes up to $50 a month, you get 200 free listings instead of 80 (and that can include auctions in the collectible categories), and your FVF goes down by 1% across all categories. Insertion fees after the 200 free are used are 20c for non-media BIN, $1.00 for a collectible auction and $1.50 for other auctions (assuming the start price/s are under $100).
In regards to your question, if eBay do run some sort of promotion and a scheduled listing qualifies, then the insertion fee will reduce to 0, but otherwise the 50c will be charged when the listing goes live.
