Around 30 million PDA’s were manufactured and sold world wide by the end of 2004. This huge number guarantees a large secondary market for PDA’s, and a lot of bargains could be found among them. So if you’re considering buying A PDA that was previously owned and used by someone else, you do have a lot to choose from.
Previously used PDA’s can be divided into 2 groups : used PDA’s and rectified PDA’s. The used PDA’s have been used by another party and are sold as-is. They may work properly, and they may not. The rectified PDA is usually sold by the manufacturer, and has some kind of guaranteed-to-work warranty. Rectified PDA’s are all the PDA’s a manufacturer or a supplier can’t sell as new ones, for various reasons.