If you buy an item on eBay, pay fast, don't create any problems and leave positive feedback to the seller when the item is delivered, what are the chances of you receiving positive feedback in return?
If its a professional seller close to 100% I'd say.
Some of them already give you good feedback before you write your review.
>>16790952
Basically what the other guy said. Unless a product is defective or the buyer took an unusually long amount of time to pay both will get a 100% rating