The newspaper hired a price-data firm to review more than 500 doorbusters ads from big box and department stores.
It found nearly one-third of the products had been sold at lower prices in other times of the year.
The paper reports popular items such as watches and jewelry typically sell for their lowest prices in October.
Other items such as flat screen TVs are best bought at the beginning of the year when new models comes out and retailers mark down the older ones.
