Target has a buy 4 get 1 FREE on Seventh Generation products through 8/22, plus you can use the new $1/1 printable coupon to pick these up for only $1.59 each. If you love this brand, this is a pretty decent price and you would be able to stock-up.
Seventh Generation Dish Soap $2.99 ~ Buy 5
Buy 4 get 1 FREE (-$2.99) through 8/22
(4) $1/1 printable coupon (need 2 computers)
Final Price = $1.59 each