20% is a reasonable percentage, but for how long? Forever? That's most definitely unreasonable.
TBH, knowing what I know about eBay, I wouldn't take this deal if I were your friend. Depends on the product but usually that 20% is pretty much all of the profit anyway. So even if your friend is able to sustain sales he will quickly realize that he's giving you nearly all of the profits, at which point he'll either quit or steal from you.
__________________ SPACER Heights by great men reached and kept
Were not obtained by sudden flight,
But they, while their companions slept,
Were toiling upward in the night.
-HWL |