Hi Faz, I used to make a living from ebay. I built up a business on there from nothing over about 3 months in my spare time until I felt I could replace my income from my day job.
I only worked about 6 hours a day eventually but I didn't like the solitude of working from my box room at home.
A friend of mine is still a full time ebayer selling much the same as I was and is earning about £70k per year after tax without having to get hired help.
You can easily find out which products are popular an have good profit margins. Use pulse on ebays home page and tick the completed listing box when searching to see how many items of a kind are selling per day and the achieved price.
Best of luck.
eyedeedoubleyou@fsmail.net