In the past, either the buyer and seller had to wait longer to find a mutually acceptable price, or pay a lot more than $0.10/share. HFT is actually an improvem

In the past, either the buyer and seller had to wait longer to find a mutually acceptable price, or pay a lot more than $0.10/share. HFT is actually an improvement for both sides, because they can either 1) buy/sell faster or 2) pay lower transaction costs (and probably both!).