At $295, and with that level of support, MOI is a bargain... most of us know that...

I only recently came across a pricing model for software that seemed convincing to me: Older versions (= less features) are less expensive than the most current version. If the case is well presented, then people could decide whether or not a certain feature-set is necessary for them - and get a "better" price if not.

That made sense to me. It extended the life cycle of older versions, lowered the entry price and made a good fit between needs and price.

If curious, check out here: http://www.supermemo.com/english/which.htm