Any plans to make them available for sale again?
Thanks
Q
Not at the present time. The server that housed the Straight Dope store is not currently operational. Sorry.
TubaDiva,
Can the design be used by someone who owns their own t-shirt press or is there a copyright prob with that?
The one a dear Doper friend 
gave me to wear on my recent marathon bicycle ride accidentally got a spot on it.
I know: that just gives it character, right? 
Thanks
Quasi
I’m sorry, Quasi, but yes, the shirts are copyrighted material.