Yes just $2 to any shirt, so instead of $16 it becomes $18.
There is a custom pledge for that, you'll need to figure out the math for it.
Every shirt can have up to 8 different sizes (XS, S, M, L, XL, 2XL, 3XL, 4XL) so it's hard to get in bulk unless I have a very large amount of purchases in one size.
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