I have a TechnoKats shirt and several ComBBAT ones, but that's it.
We very rarely have extra shirts, seeing as Pratt pays for them and we give all extras to our sponsors. We're not allowed to trade shirts that are from the current year, though somoene *cough*zangrecough* did last year..oh well. Guess it's too late to set up any trading unless done by mail, not that there's any shirt I particularly want (no one from 73 will trade me
).