And since owning this phone, I have yet to find reason for needing a mobile version of any ecommerce site.
Maybe it's because you're new to it, but the desktop versions, while functional, get real old real quick.
Scrolling all over the place, side to side, enlarging and shrinking isn't a good user experience. Although it works, it's a PITA. A site with RWD doesn't lose any functionality, it just automatically formats to fit the phone presenting the data in a better layout without panning and zooming, aka annoying.
Personally, for me if I get easily frustrated shuffling your site around I just bail and go to sites that already have a better experience like many others already so as well. I know it's not just me as I listen to my wife (We have 2 Gallaxy phones and an iPhone so we use both types) and my friends as to what they do while shopping online and it seems pretty universal that the frustration level builds quicker on the small devices and people bounce to better sites.
What I'm curious is why the topic is building for Black Friday 2013 when people are losing money TODAY?
RWD isn't hard, there are templates for many stores and CMS already and the upgrade for that aspect can happen in as little as a day or two, it's pretty painless if you have the right software and the right developer doing the upgrade.
What I'm more concerned with myself is the payment systems as filling in all the CC and shipping details per each site is a real pain. Google Checkout is shutting down leaving just PayPal and Amazon payments and many merchants seem to resist those options and I used to be one of them but my checkout rates actually increased when I added Paypal.