CursorFX = CursorXP ?

I have CursorXP, but it is much too slow to be useful on Vista with my graphics card. Unfortunately, it seems development of CursorXP is dead. I just recently noticed there is a CursorFX. Now CursorXP is not useful anymore, I have to change to CursorFX (Thanks, Stardock!) I tried CursorFX and it works much smoother. So, I have to pay again for a program I had for years. Any possibility to have a discount when having CursorXP? I ask this because CursorFX IS CursorXP but then more developed, so it should be called CursorXP with a newer version number.