I sold 1p feedback on one of my ebay accounts a couple of years ago. Sold about 3000 in a matter of weeks. Needless to say after about 6 weeks eBay suspended me and removed all my feedback - even the ones that had been gained legitimately. Not worth the hassle!
I'd be embarrassed by actually "buying" feedback...
1> Makes you look a complete numpty if someone was to view your FB.
2> What is the point? lets face it - if you can't get genuine feedback on eBay then your a complete muppet & shouldn't be on there.
It's obviously for numpties with no business brain & who want to become a powerseller... the thing is - what then? A powerseller with numpty FB and no decent selling lines? Great achievement!
Thats why you would make the feedback private so no one knows what the feedback was for...
The reason i did it was so that my items wuold sell for more. At the time i was selling items on my more established ebay account for 30-40% more than on the new one. If ebay let you do it INO everyone would!