OK, I'll try one more time:
Let's say you have your own business website, and on it you advertise retail prices for your services, as well as using that website to allow customers to book details. You have a customer that has been coming to you for a few years, and he always looks at your price list every time he books a detail with you.
It's time for him to book his next detail, and he discovers that the retail prices you list on your site have gone up substantially from what he is used to seeing. This customer has no idea what Living Social is, and doesn't know you raised your list prices because you wanted to market yourself through that service. Because of this, he assumes there is some other reason the prices have gone up and because they are now out of his price range (or because he thinks you're trying to gouge him), he decides to look for another detailer to go to instead.
Alternatively, a customer who has been coming to you for years tells his friend to go to your website and book an appointment, and stated that for his car, he has been charged price in the past. That friend also does not know about Living Social, so he simply goes to your website to look at your retail prices listed there. Because he discovers your list prices are much higher than his friend told him you charge, he decides not to use you.
Now, do you see why raising list prices just to knock them back down with a discount specifically for people who purchase a deal through Living Social is a BAD idea? Not everyone knows about or has access to L/S, and some simply will not use it even if they do know it exists.
Plus, even the customers who you do get from the Living Social deal will assume you're way too expensive for them to come back to after they've used the Living Social coupon, which could potentially prevent you from gaining repeat customers after the promotion is finished.