I never thought about how much they cost. hahah I just asked for shirts I liked. How I did it, hmm, I asked sweetly. I would not have gone up to anyone I knew would not give me their shirt.
I also tailored it to the person since I observed them a bit before approaching. Also doing a couple of shots of liquid courage before approaching helped.
OMG, was I a female PUA...
Nah, I just wanted to bring their shirts home, not them.