There's a loophole that lets you spend less than $25 to order Add-on items from Amazon

Amazon's Add-on program is incredibly useful, but it can also be a pain.

Add-on items are cheap products that Amazon deems "cost-prohibitive to ship on their own." Many of them are everyday household items - like toothpaste or pens - which could save you a trip to your local convenience store.

But there's a catch: Amazon has a $25 minimum order requirement, and that's not including the Add-ons.

Luckily, there's a loophole that lets you get around the $25 minimum order restriction. Here's how it works:

Disclosure: Jeff Bezos is an investor in Business Insider through his personal investment company Bezos Expeditions.