A commercial package is paid for before use.

Not much compared with a redundant commercial package wasting shelf space.

Open formats can be viewed by a number of free or commercial packages:

In addition to commercial packages, many open-source software solutions are available.

A typical commercial package will make a claim similar to the following:

Several commercial packages, and at least one open source product, are available.

Free statistical software is a practical alternative to commercial packages.

They are marketed and sold in a commercial package.

Currently there are some commercial packages available for buying.

In addition to commercial packages, many open source solutions are available.