Here is a link to the end of life trade in deal for the Valeo and Aptus
https://digitaltransitions.com/end-life-digital-back-trade/
As pixjohn already has a IQ back it's not likely that a tradein offer is the right thing. I guess he's in a similar situation like I am in. Using Schneider Digitar wides with shifting, and really liking those lenses and minimal post-processing required. Upgrading back generally means downgrading performance due to heavy color casts and crosstalk issues.
I did upgrade from a Leaf Aptus 75, but Team Phase One's only actual upgrade for this use case is the P45+, all the later offers requires you to upgrade the lenses too, or well downgrade it if you like me prefer the design principles of the Digitar lenses over the Rodenstock Digarons. I ended up moving to Hasselblad which
had the Kodak 50MP CCD which is the last that works well with the Digitar wides. As far as I know those cameras are still fully supported by Hasselblad, but their time is counted.