What's the most reasonably priced lot for parking during a Red's home game?

I'm not sure of the specific lot, but the further away from the ballpark, the less expensive pricing will be. The last Reds game I went to, I parked on the other side of Paul Brown Stadium...quite a hike, but it only cost $5. Most of the other lots were charging $20, but I'm not sure if that's typical pricing, because I went to a division series playoff game. Usually, when I go to a Reds game, I prefer a shorter walk, so I typically park in the garage to the east of U.S. Bank Arena.