Basically, eBay has quietly removed its listing limitations for both basic and featured stores (previous capped at 600 and 1500 items respectively). You could always have gone beyond this limit, but it has always historically cost you $0.30 per listing per month (i.e. $300 per 1000 listings per month) for every listing above your cap, which pretty much forced you to subscribe to an anchor store (which costs a whopping $604.95 per month including GST) if you had more than a couple of thousand listings.
Here is the extract from the link provided that references this;
All sellers with an eBay Store subscription on eBay.com.au are entitled to 250,000 free insertion fees per month for items listed in auction-style or fixed price format in most categories, including relisted items and listings that are ended early.
It does conflict with information provided here (because this page is for sellers who are not on Managed Payments): https://sellercentre.ebay.com.au/ebay-stores
So just be aware this deal is only for early adopters of Managed Payments, and for those with a basic or featured store. Also be aware that eBay (of course) reserves the right to remove this deal and to default back to the original caps (or even to create new caps altogether) thus potentially leaving you quite vulnerable to having wasted alot of time.
It's a niche deal, and would only be useful to a small percentage of people but I thought I would share it nonetheless. It is very good news for me and I look forward to listing thousands upon thousands of new items as well as many duplicates of the same part number but with different keywords for all the different makes and models that my parts fit.
Listing should always be free given the highway robbery that is their FVF