Amazon has Cutter & Buck performance polos for cheap, depending on size.
Black striped is $13.97 for small, $16.64 for XL, $13.08 for XXL. Absurdly high in other sizes.
https://amzn.to/2Hd6tEq
This one is $13.21 for small, $20.54 for medium, $20.66 for XL, $16.18 for XXL, $20.66 for 3XL.
https://amzn.to/2HdvTBz

Black striped is $13.97 for small, $16.64 for XL, $13.08 for XXL. Absurdly high in other sizes.
https://amzn.to/2Hd6tEq

This one is $13.21 for small, $20.54 for medium, $20.66 for XL, $16.18 for XXL, $20.66 for 3XL.
https://amzn.to/2HdvTBz