Ebay probably has tens of thousands of people browsing. I think it's a good supply/demand indicator as any. Just look at how many bullion merchants are out of stock.I wouldn't trust eBay prices too much, folks. Most of those are brand new buyers who don't know cheaper places to buy metals. Plus, since items are bid on individually, prices get driven higher because there is more competition for individual pieces. If you have 100 buyers looking at a 10-ounce bar on eBay, and 100 buyers looking at 100 10-ounce bars on APMEX, the eBay price is going to go up higher.
The paper gold price doesn't reflect the true market