It's just that GPSoft is going to keep coming back for more money on a regular basis, and I don't feel they offer a substantial enough discount to registered users.
I guess this is my biggest issue with DO. I think that your registered users should get a bigger break. They (registered users) are often your lifeblood for new sales. I have convinced many people to buy the programs that I use by showing them how much time it can save or how it can improve their computing experience.
I registered DO8, tweaked it in a way that almost worked for me, and used it for a while. My config actually mapped most of the NC or TC key strokes since that is my frame of reference. Unfortunately, I could never get everything to work from the keyboard the way I wanted. The tab functionality seemed really odd coming from a Commander frame of reference. It also seemed like the listers lost focus at times that I would not have expected. (I rarely use the mouse when I am working on file management duties)
I will test DO9, since I like to test good programs, but I don't know that I can pay more than the price of XYPlorer or TC just for an upgrade. In fact, I might just register XYplorer to support its development.
BTW, I still use Total Commander (registered many years ago), but I keep an eye on xplorer2 (registered), Salamander (registered), DO (8 registered), and XYplorer.