Well check this post:
http://www.amiga.org/forums/showpost.php?p=544023&postcount=16
It is an external scandoubler at less than half the cost of the Indivision. It is different, of course, and you can buy it now!
It will get him by. Long term solution is to get the indivision.
scandoubler vs flicker fixer. big difference esp if you start going higher resolutions with graphics card.