Trinity software (nor any other retailer) sell branded media from another OEM - branded royalty OEM media is for purchase only with a new PC (and is either provided or sold as recovery or reinstallation media). What you see there, my friend, is illegal (see Microsoft v Comet for a recent example). You can purchase non-royalty Windows OEM copies from any valid retailer out there (non-branded) which are shrink-wrapped and hologrammed, and come with a CoA sticker, which are perfectly legal.
Don't do it.