Troxy merch

Went and saw geese at troxy last night (September 1st) and really wanted to get some merch at the end of the night. Sadly i left because it was so cramped inside, not knowing there was no re-entry. Does anyone have any idea where i could get the white shirt that was on sale there, it had what looked like a name tag or something about getting killed on the top left of the shirt. It was selling for 40 pound.