Ebay is a great place to buy. More often than not, the buyer gets good product, fairly safe transaction, at really good prices, and at the convenience of home. No traffic, no hassles.
However, there surely is the case when buyer is saddled with a low quality product - a product that just does not function, or is not as advertised, not upto the mark. More often than not, the seller offers to exchange / replace, but this means shipping the product back at the sellers cost, which often is simply not worth it.
I have a suggestion for ebay - while leaving feedback for the seller, let there be a PRODUCT rating mechanism too. A poor rating for the product, SHOULD NOT impact seller ratings - the seller just sells, he cannot be held responsible for the engineering or the quality of the product. Negative feedback for the product automatically alerts the seller not to deal with it, and automatically, over a period of time, will stabilise with quality products. And buyers will have the option to rate correctly, the seller as well as the product separately, without one impacting the other.
Best wishes & Happy ebaying,