As Paul and Greg mentioned, bellows are gonna still here for long time unless you basically bite them and go underwater.
I wouldn’t sell the camera if I suspect they are not in good shape. This camera goes with original bellows, no reason for changing them.
Still, if you want new bellows in a Pekeo II, I have one with non fixable bellows that I kept for donor. I have changed bellows of this camera only once, this camera had no provision as Isolettes for changing the bellows, they are just glued. Previous time I adapted bellows provided by Sandeha Lynch (even he knew it would be risky) and overall it went we but Perkeo is so slim that I wouldn’t wind with front retracted. I can ask again this model specifically bit I guess from here is better to continue in a private conversation that we have already opened.
Overall Voigtlander bellows are top notch same as Zeiss Ikon ones.