If you can shoot tethered, an old Imacon back will cost you about $1K.
Edmund
The AFD (not the AFDII and later) works perfect if tethered in combination with an Imacon 132c, not only it provides tethered without the need of an exterior cable, but it supports LV too (although of "basic" quality) with the (free) flexcolor sofrware... Other than that, it will work tethered with his Toyo 45 too.
But I would prefer the Imacon 132C over a P25 anyway on the AFD and Toyo for untethered hand held shooting too for several reasons...
1. It is independent to CF card technology/compatibility...
2. It can shoot 1200 images in its image bank when used hand held/untethered....
3. It is the same sensor and sharpness as well as ISO than the P25, but more accurate/neutral in its colors....
4. It doesn't need an "one shot" cable as to use it on the TOYO...
5. It takes interchangeable plates in case he'll want to use a different platform in the future...
That said, it still amazes me how good the 37x49mm KODAK sensor backs stand against todays technology... They really do have that "fat pixel magic" looks that many prefer over anything modern. I know many pros that are holding up to their 22mp KODAK sensor backs as to use for both their MF platforms and view/tech cameras for its unique image quality and "looks"... Never the less, having good experience out of all 22mp backs, I would much prefer the Kodak sensor backs over the Dalsla sensor ones if it is for 22mp... The Dalsa sensor I would prefer on its 33mp version over the Kodak sensor 39mp backs.... Particularly if the use on a tech camera is of major consideration for the user, I don't think the 22mp Kodak sensor backs have much competition around and the Imacon 132c is "in a class of its own" for the particular use, tethered or untethered.