The link goes to "https://www.amazon.com/dp/B01HCTCHHK/ref=cm_sw_r_cp_ep_dp_a-AjybEHCQ5SF". I'm no computer expert, but this looks like an Amazon referral code embedded within that link: "ref=cm_sw_r_cp_ep_dp_a-AjybEHCQ5SF". If that's a referral code, that means somebody is making money off each Amazon purchase (and not just for that item, as the referral cookie stays on the person's computer for other Amazon purchases). I note that the link works without that extra portion, but yet its there. Perhaps someone can explain as its hard to believe a mod would do that, but look at the source.
You can just delete the "ref" part from the URL and it still works.