Check here for the criteria for eBay's deals plus how to submit a listing for consideration:
http://submissions.ebay.com.au/
Unfortunately, your listings won't currently meet their requirements, however, as you need to have more than 100FB, they won't accept listings with Best Offer enabled, they have to be GTC (so the 10 day duration won't be accceptable) and with at least 50 available if under $50 or 30 available if the price is between $50-$100, estimated delivery time needs to be no more than 6 days if posted from Australia (I can't work out where your items are - it says item location Australia, but postage states economy delivery from outside AU), and your listings need to meet all of eBay's policies, so I suspect the number of duplicate listings might also be an issue.
