There are a few Voskos Yogurt coupons available. Voskos has three organic varieties of their greek yogurt. They often go on sale for just $1 each, and with these coupons, you can get them for as low as free!
$1/1 Voskos Yogurt (under the "coupons" tab on their Facebook page). If you share the Voskos Facebook page with three friends that become fans, they will also send you a coupon for a free product!
$.75/1 Voskos Yogurt (on the right hand side of their website). If your store doubles, you can snag these for free when they go on sale for $1.