WTB - Used Perdix or Petrel 2 + entry level nitrox computer (Duo) for daughter

Looking to pick up a used OC Petrel 2 or Perdix (non-AL) that is in good shape.

Also, looking for a simple nitrox computer for my daughter. Must include user replaceable battery and be non-air integrated. Would like an old Duo, but willing to consider what is offered.

Please PM me if interested.

Thank you.

Found a computer for my daughter. Thanks to everyone that responded.

Found everything I needed. I appreciate all who responded and the generosity of some old friends.