Right now at TRU/BRU, all Lansinoh products are buy one get one half off.
I cleaned my local store out of bags. I go through 250+ a month! Scored 200 bags for just over $30 (4 50 count boxes). Those are regularly $12.99 each. The second box is only $6.50 right now with the sale. No coupon needed.
Check it out if you need these types of products.