I didn't find it useful. It was mostly basic stuff.
While you can't price things too high, if you price stuff too low and are just one person then you will run out of time to handle them all. But if you price them higher, you sell what you have time to handle and make more money. Plus it's a verified fact I and others have observed that the lower the price of the item, the more likely the buyer will leave bad feedback.
The eBay store isn't an option if you have a large number of ebay accounts selling a small amount each.
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