I have to ask.....how much research did you do before going full time on ebay?

Did you have an ebay presence while you had your retail shop to test the ebay waters so to speak?

I have to agree with the sellers who have offered you so much advice....you need to do a lot of work if you want to have a chance here.

But I can tell you that comparing yourself to Officeworks is doing you no favours in my book.

Just as one example....I regularly buy a well known brand of permanent ink marker pens.   In Officeworks they are around $52 a box.

On ebay I was able to get them from Germany for $23 a couple of years ago.  The next time I needed to buy them I bought from a  seller in Queensland for around $25.

If you are modelling your prices on Officeworks then you have no chance of being competitive.