I don't think blaming E-bay for this is fair, it is up to the seller to make sure their postages are fair and reasonable

Get outta town!      Up to the seller?      Lotsa seller's ready to rip you off

given the chance. Some old-time seller's, who only sell in a blue moon, don't even

keep up with the new policies

And I'm not saying that this is the case here 

 And as for ebay - Excessive postage is against ebay's policy. 

 If it's reported, why is nothing done?

edit:  Ah, I see,  harley babes' got the right answer