Recently a plumber told me not to buy my kitchen remodel; sink, faucet, etc. from HD, because the name brand manufactures (Kohler, Blanco, ect.) make 2 different grades of the same product. One for big box stores and a higher grade for Plumbing Supply (bath-kitchen show rooms)same exact item/skew #. I will admit that there is quite a difference in price so it does seem plausible, and clothing designers/manufacturers routinely do this, but I want to be sure the information is accurate before I shell out hundreds of $$$$ more for the this expensive renovation. Thanks!