Unlike software marketed through normal retail channels, where you are forced to pay for the product before you've even seen it, the shareware concept lets you try a program for a period of time before you buy it . Once you have tried a shareware program, you know whether it will meet your needs before you pay for it. Shareware programs are just like programs you find in major stores, catalogs, and other places where people purchase software - except you get to use them, on your own computer, before paying for them.
Shareware distribution gives users a chance to try software before buying it.
With registration, you get anything from the simple right to continue using the software to an updated program with printed manual. Shareware authors are accomplished programmers, just like commercial authors, and the programs are of comparable quality. The main difference is in the method of distribution. The Shareware concept makes fitting your needs easier, because you can try before you buy. And because the overhead is low, prices are low also.