A lot of eBayers asked Chris and myself about 'when' is the right time to open an eBay Store.
Consider opening an eBay Store this way (so that you have an idea where to open one and when to start):
1. Which eBay site does majority of your sales come from? If 75% comes from the USA, then consider opening a US eBay Store to enjoy eBay USA Listing Fees.
2. What are your selling quantities like? If you have less than 50, no point having a store. But if you have more than 50, that's your cue to open up a basic store.