Macy's offers the Attack Life by Greg Norman Men's Stripe Performance Polo Shirt in Port or Dark Marine for $18.13. Pad your order with a beauty item (they start at $3) to bag free shipping; otherwise, shipping adds $10.95. That's $37 off list and the lowest price we could find. It's available in select sizes from S to XXL.
Vinegar is arguably the most versatile product in your house. If you aren't using it for all of these purposes, you're probably wasting money.