Banister stair gate (West woodland)

Banister and stair wood gate. Summer infant brand, there is one part missing to secure one side of the gate if both sides have a banister. Has all parts needed if 1 side attached to a wall. You could order replacement no drills banister to banister kit online for approximately $30. Same as you would save money ($75 for gate). Need a gate? Help keep this out of a landfill.