If they are an advertising site all the better, they cannot allow false advertising on their site and must take steps to make sure advertisers fulfill their obligations as outlined in the sellers advertisement I.E. if a seller advertises a 5 year guarantee ebay as the host advertising site must make sure that the seller fulfills this promise to the buyer.
Why has no-one questioned this before its a simple concept really all ebay have to do is send an email telling the seller he must honor his advertisement.
I also thought ebay was classed as an e-commerce site and as such subject to the consumer laws of the countries it operates in.

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