There has been some great discussion on whether or not "freemium" (i.e. offering a lite edition) is a good way to go:
One thing that doesn't seem to get a lot of discussion is the notion of charging a trivial amount; i.e. relative to the total amount. For example, if the median installation is in the $thousands, charge for the lite version in the tens ($10... $50, whatever). Tens of thousands, maybe a couple hundred bucks.
The advantage (I would imagine) is that charging a little bit makes customers more engaged and likely to use the product they purchased, and by using it, they might find it's most certainly worth the upgrade.
I would presume the disadvantage is less people downloading/using.
What are your thoughts on making something (basically)freemium?