It’s a catch 22 because if you already know the seller but are opting for their Amazon vendor e-commerce channel you’re undercutting their business by taking Amazon’s promo discount on shipping today and forcing the seller to make up the difference in vendor fees. Then when your favorite reasonable merchants that balance price and quality get squeezed out of business by cheap knockoffs competing on the same platform in 1-5 years you’ll wonder why you can’t find quality products of that type anymore except from niche boutique merchants who have to charge even more to ship quality to your door than they used to.