Amazon has the 2-Count 4.5oz Fleet Laxative Saline Enema for $2.44 - 30% off coupon (check "Save an extra" box, eligible on first S&S order for this product) - 5% off with Subscribe & Save (can cancel at any time) = $1.59 with free shipping on $25 or with Prime. The 4-Pack is also $2.78 after coupon & S&S.

Provides fast, effective relief from occasional constipation and has a soft pre-lubricated gentle glide tip for maximum comfort.