actually, now that i think about it, i havent bought a T-shirt in a long time. i'm getting a rather nice collection of ones from participating in local 5K races over the years. i didn't think i had anything to contribute to the 'what do you collect thread' but i guess this would qualify...

Hanes black, no pocket tees: $3.88 (x4)
Levi's regular fit jeans: $19.99 (x2)

A year's worth of clothing replenishment, $60.50 tax included.