Well, going through the comic shop is a pre-order. They're basically acting as a go-between for me with Diamond Comics. I ordered mine already. Thing is, to order these through your comic shop AND to ensure that you get both versions of the Sandtrooper, you've got to hope that they're ordering a minimum of one case. The reason being that Diamond will not make certain that you get both versions of the Sandtrooper if you only order two. If you do that, you're taking a chance that you'll get both versions since Diamond will not differentiate between the Squad Leader and the Sergeant. The only way to make sure you get both is in the event that your comic shop orders an entire case. If your comic shop orders the whole case, they'll receive a total of 3 Squad Leaders and 3 Sergeants. What a pain!
Now I'm waiting for Bust Ups series 4 to go up for pre-order. I can only imagine what the rush is going to be like when the new versions of Darth Vader and Yoda go up for pre-order. Those could have the largest edition sizes since the Deluxe Stormtrooper. That one clocked in at 10,000 pieces.