You’ve taken the time to find the exact item you want to buy, put it in your cart, and you’re just about to check out when you notice a box labeled “Promo code or coupon,” just sitting there waiting to be filled in.

If you’re like me, you won’t be able to complete the purchase until you’ve searched the web for the best available code. It’s exhausting, especially for moms like me who tend to use the wee hours to shop for essentials and really just want to go to bed.

Fortunately, Last-Minute Coupon Search Syndrome is one of the many afflictions that can be fixed with browser plugins. Try one of these free products and watch the savings roll in effortlessly. (See also: 8 Apps That Actually Pay You to Shop)

Honey

This browser plugin, which promises to automatically add the best available coupon at checkout and find deals on Amazon, has been heavily advertised as a big money-saver. But does it really work? People seem to love Honey. It has five stars on the Google Chrome store, and even my brother-in-law called me up to recommend it. So I downloaded it myself to check it out. It’s also available for Firefox.

We were almost out of cat food, so I headed to Amazon to search for a deal. I quickly found a sale price that I thought was pretty good. Sure enough, I noticed Honey’s logo on the product page, with the words, “Best Deal.” Then I hunted for a new pair of Crocs for my daughter, and found some for $34 — but Honey told me I could pay $4 less by getting them from a different Amazon seller.

Finally, I tried Honey’s coupon code feature. I went to an online pet store and put some flea drops for the cats in my cart. The front of the website advertised a 15 percent off coupon code, but I didn’t type it in, hoping that Honey could hook me up with something better. But nothing happened. I located…