Piping Rock offers two Piping Rock Oil of Oregano 1,500mg Softgel 150-Count Bottles for $7.07 plus $2.95 for shipping. That's $5 off list and the lowest total price we could find. It purports to be an anti-oxidant and promote a healthy immune system. Note that the countdown timer on the product page does not reflect an actual expiration time and resets each time you click on the link.
A close price: Puritan's Pride offers a 3-Pack of 90-Count Bottles (270 total capsules) for $8.99 with free shipping. That's about the same price per pill as above.