Only once that period is up can the business, data Latest Mailing Database specialist or lead generation company sell it as second use data to another company. Often there is no period of exclusivity here. There is a big emphasis on fresh data - data that is 24 hours old (often generated by lead generation companies through telephone consumer surveys) The fresher the data the more expensive but also in some cases the better the Latest Mailing Database chance of nabbing the customer before somebody else does.
So really you get what you pay for and here that's the Latest Mailing Database first pickings of fresh prospective customers. So if the main Latest Mailing Database advantage of second use data is that it is cheaper what are the main disadvantages? 1. People may have already bought the product you are trying to sell 2. People may complain that they feel harassed - even complain to the authorities e.g. watchdog, the FSA etc.
The call centre /telephone sales agents calling the data Latest Mailing Database may get de-motivated calling data that has been 'rinsed', which affects the morale of the whole company, and can mean a high attrition rate. At a first glance the disadvantages seem to outweigh the advantages... The main advantage of second-hand data being that it is cheaper Latest Mailing Database so you can buy in bulk.