It seems to me that eBay is facillitating theft.

 There are some glaring inconsistancies with the new return system.

 So a buyer simply has to "claim" an item was damaged/faulty/not as described and that is all. No evidence needed.They return it and their word is all that is required. Should the seller be away or out of communication and miss the request within four days the buyer keeps the item and is fully refunded. I am amazed this is not illegal.

 This is institutionalised stealing. It is not fair or reasonable. 

 A buyer may use an item for up to thirty days and severly damage it (say a mobile phone dropped in water) and claim the item is faulty and claim a return. The seller who may well be very familiar wih his/her products can easily see what has happened but has no way to make their counter case. So again they lose.

 The sellers seems to have completely disproportionate rights. Should a buyer return a brick in a box, so long as there is a tracking number they lose their item and money. There appears to be no real pathway to appeal and their "word" unlike the buyers has no value.

 A seller will quickly be recognised via feedback and defects should there be issues. A buyer ...well there is no feedback, so how do we know if they are serial returner-thieves?

 There are many more problems and inconsistancies.