Tnx for the response and advice digital*ghost.

I had a listing ended prematurely by eBay. The explanantion given was fair but as well as ending the listing they removed the whole thing! Even though it showed up in my Unsold Items folder, when I tried to edit it to remove the offending paragraph I discovered they had totally removed everything! It took me ages to construct it and I had no backup so I was not impressed at all!

Mind you I have learnt to backup backup backup!! lol

Just wanted to clarify a few things before I posted this time. 

It's a bit hard to list multiple listings for a couple of reasons. Primarily I'm limited from creating too many listings of different qtys by my eBay selling limits. Also I can supply qtys from 1-100+ and everyone's needs are different.

Consider this scenario:

I have 100 items to sell. A single item sells for $11 each. I can create a single listing for this no problems.

However If a customer buys between 11 and 20 items, the item price changes to $10 each. 21-40 items are $9 each etc

How can I create a listing that sells, for example, 20 items at $10 each (a total of $200), but if they want to buy more they can buy extra items at $9 each? Is that possible? If less than 10 items are bought the price would be $11 each so a separate listing for single items only would not be helpful. 

Aside from including a Bulk Price list in my listing and making it clear that I will create an ebay listing to suit a customer's requirements, I can't work out how I can do it!