taken from the Circuit City website:
Price Protection & Unbeatable Price Guarantee
If within 30 days from the date of our offer, you show us a lower, currently advertised price from another local store with the same item in stock, we will gladly refund 110% of the difference between our price and theirs.
Circuit City's Unbeatable Price Guarantee does not apply to services, nor does it apply to special offers or promotions, including rebates, mail-in offers, free-with-purchase offers, limited quantity offers, bundled promotions and special financing. Circuit City's Unbeatable Price Guarantee does not apply to products and services offered by third parties operating in Circuit City's stores