Delta has a list of preferred and authorized online retailers. http://www.deltafaucet.com/where-to-buy/authorized-retailers.html From my understanding the quality will be the same from any of them. Good news, Wayfair is on their list! Also, concerning the price, the prep kitchen faucet is $168, the full sized kitchen faucet is $192 so that may be the reason for the difference.

I ended up here, because I'm redoing my kitchen and trying to make a decision about the faucet. I have various faucets throughout my house from Kohler, Moen, Restoration Hardware, and Newport Brass. I think the Restoration Hardware fixtures are made by Newport Brass, because we had to call them when we needed to replace. We've had them from 10-12 years, so I don't know the styles or even if they are made. Almost all are polished nickel, and the Kohler and Moen are always spotless, laundry room and bathroom, respectively. I'm not crazy about the pull down sprayer on the Kohler. The Moen Showcase (do they still make this line?) is in the bathroom, and I love it so much, because I can just pour water over it and it will dry spotless. It's amazing. It is wall mount, and I wish I had it in every bathroom. Because of my success with Moen, when I needed a faucet for my kitchen, I bought an inexpensive (relative to all the other faucets I have) Moen at Home Depot. It is the only non polished nickel faucet I have. It is stainless steel, still looks brand new (10 years+), and the pull down sprayer works wonderfully. Unfortunately, I'd never buy fixtures from Restoration Hardware again. They spot like crazy. The Newport Brass are slightly better, but they also spot. I'm looking at Kohler and Moen for my new kitchen, but the choices are limited in polished nickel. Now I'll look at California Faucets, too, but I'll skip Rohl, since someone mentioned the polished nickel spots so much.

That's exciting! You'll have to update us with pics once it's installed! My in-laws have the "starlight chrome" finish. They've been very happy with it. It was part of a mini kitchen update (counter tops and sink updated). I was surprised at how replacing just those few items really elevated the space, making it feel a hundred times nicer. Also, we were told Grohe is a good faucet brand. My own faucet came with the house, American Standard brand, and already has some knicks in the finish after 3 years. Theirs still looks brand new after a couple years of use.

As I usually do, I will suggest skipping electronic faucets and pick out any faucet you like and equip it with a Tapmaster which is an entirely mechanical foot pedal. You do touch the pedal, but you never have to touch the faucet!