My advice is focus on your own business, not giving advice to others. I agree with you that there's money to be made on eBay. Same as you, I've won auctions for lot items, broken the lot up and sold individually for up to 20x profit. Focus on that John.
Here's another tip... Mark your items up by 20-25%, then use markdown manager to mark them down by 20-25%. Use "2 day" sales, do this every 2 days and watch how the lemmings flock to what they perceive is a deep discount. It increases "impulse" buyers who only see the discount. Since I started doing this in June, my sales are up over 400%