Why is it unfair?

If sellers have their blocks in place they do not have to worry who buys from them...serial non payers will not be able to buy.

How do you judge if buyers are good or not?  They cannot get anything except positive feedback and some like me have private feedback anyway.

If you had left a green dot with a negative comment it could be removed by ebay and you would be the one in trouble...why would you bother?

As lyndal said, if all members have their blocks in place, those buyers cannot bid on anything on ebay. Perfect system, once all members know it. 😉