There's a reason furniture for less sells more mattresses than anyone else in the area. Besides having the lowest prices on name brand premium mattresses, we also post all the specs of each model. If you run into a store that doesn't post the information on a bed, ask them why. If they were proud of the specs, they would certainly list them.
While it's true coil count isn't the only important piece of information on a bed, it absolutely does matter. The more coils, the more it can contour to the curves of your body and provide support where you need it. Don't settle for a mattress from a store that isn't proud enough of the mattresses they sell to tell you whats in them.
Sleep and Mattress Purchasing Tips
Series We Carry
Comfort Solutions by King Koil
Spring Air International