If you ever want to be taken seriously, don't even think eBay. Let the amatuers use it to try and make a quick buck and then, deal with the chargebacks. eBay is good at what it does, but, as a consumer, I wouldn't consider buying anything from ANY company who used it as a selling outlet.
It would be better for your business in the long run to create a good marketing plan and spend your advertising dollars wisely. Remember, there is no free lunch. You might get a quick influx of customers from eBay, but in the end, they're gonna cost you plenty in lost time and revenue.
Think about this for a moment. You are a small business looking for a web host for your business web site. Would YOU go to ebay to find a reliable and stable, web hosting company you can depend on for your business?