Tanga.com offers the Vital by New Balance Women's Sports Casual Tank Top in 10 styles for $3.99. Better yet, add four to your cart for $15.96 and apply coupon code GOTEAM to drop it to $7.98. With free shipping, that's $2/tank and the lowest total per-unit price we've seen for any women's tanks. They're available in sizes S to XL, although not in all size/color combinations.

BUY NOW: $8 Free Shipping After Coupon at Tanga