In 2015, the Federal Trade Commission released new rules for Disclosure Compliance. This ensures that readers and consumers of web media (blogs, Instagram posts, YouTube, etc.) were made aware that the poster was sponsored, endorsed or paid by a company that they were posting about.
In accordance with these FTC Guidelines, if there is a post containing links to products, there will be a disclaimer at the top of the post informing you whether these links are affiliate links, of which I receive a small compensation from sales of certain items.
Prices are exactly the same for you if your purchase is through an affiliate link or a non-affiliate link. You will not pay more by clicking through to the link.