Of all the things you can run out of in your bathroom, contact solution might be the most annoying. You can always squeeze a little more toothpaste out of the tube, but once you find an empty bottle of contact solution, you’re either making a late night run to the pharmacy, or sacrificing a pair of perfectly good contacts.
Today on Amazon, you can save $5 on a 2-pack of ReNu lens solution, bringing the pack down to $9 if you use Subscribe & Save. If you prefer Biotrue, that also has a $5 coupon that brings it down to $11, again, with Subscribe & Save.