If folks are looking for this, Bucking Horse Outpost has the 325 packs for $18.60 each with free shipping on orders over $125 and NO sales tax collected (at least for out of state buyers). That's 5.7 cents per round which is about the cheapest I've seen it in a long time. There is a limit of 10 boxes at this price.
Other stuff - you do have to create an account, no guest checkout, and they require adult signature on ammo sales but if you might not be home to sign for it you can choose either UPS or Fedex at checkout and those companies both have options to "Hold at Location" so you can go pick it up at some place convenient to you.
Federal Automatch AM22
