I've put together 14 high-quality original podsafe instrumental tunes from my Penmachine Podcast into a CD album you can buy. It also includes a bonus data DVD with a bunch of cool stuff that isn't on this website. Find out more...
I think I've figured out a rule for downloadable software:
If its website contains a picture of a product box (even if there is no way to get the product in an actual box under any circumstances) or uses frequent exclamation marks, or both, then chances are the software costs money. See here, here, here, here, and here.
If there is no product box shot or exclamation marks are few, or both, chances are the software is free, open source, or donationware. See here, here, here, here, and here.
It's not a hard and fast rule, but it works much of the time.