Change sale price on multiple cats

[Reven Rosca]

I'm afraid it's impossible to set them for sale by script, since they are no mod, but setting multiple cats/objects for sale at the same time is easy peasy if you want to set the same price on all cats/objects:
Right click - edit. Then shift-click all the cats you want to give a new price. Tick "for sale" in the general edit tab (Yoiu may have to untick first, then tick again). Set yoiur price and click apply.
This is a lot faster than pricing one at a time.