How can one know what items will go on sale on a particular sale day ?
For example, say I am interested in buying a roomba 880. How can I know if this item went on a sale (in the past) on Father's day ?
Or a boxing day ? And how much was it sold for ?
Is anyone ever of historical price trackers ?
Cheers,
P.S: Could this be an idea for pricehipster ?
i usually use ozbargain search, and camelcamel for amazon