It seems as if some store like to carry the same models as everybody else, but they want their customers to be unable to compare their prices and the prices that the competition has to offer. Perhaps as a side effect or possibly even deliberately, these stores deprive customers of the ability to find reviews of the products they are planning to purchase. For instance:
It is believed that the Costco lcc3242u - 32" Aquos LCD TV, is the same model as Sharp lc32d43u. It is extremely difficult to find reviews of the Costo model, while a search for lc32d43u returns thousands of pages. Of course, this way you can also find a better price. But I would not recommend that, because Costco's warranty cannot be beaten!