In return for postponing their receipt of the ARC tokens into the future, holders get to enjoy a discount to the market price of ARC. For example, instead of swapping $1000 of ETH to receive 3,000 ARC, a bond that pays the holder 3,000 ARC in one week’s time might only cost $910 to buy now, meaning the bond holder gets to enjoy a 9% discount on their purchase. The end result for the investor is essentially the same however, being an exchange of funds for tokens.