FYI they will send them out in six separate boxes!
I have three of them and was quite surprised by the inefficiency of the package... one box alone seems like it could hold 8 of the bases! But, now that I think about it, I bet these are all pre-package probably by an outside company and are ready to go and all they have to do is slap a label on them and out the door they go.
I wonder how long this design has been around? I know I bought my first one in 1993 or '94 just after I saw Norm Abram use one.