Three HQM and three tech trash, and no blueprint to learn. Read the bill as what a looted camera is worth before it goes into a turret or the recycler.
Every camera you own was looted. The row marks it not researchable, so the Level 3 recipe never unlocks, and the calculator only prices what sits in your box: a little high quality metal and, more to the point, tech trash, the same part a C4 needs.
So spend each one where nothing else can stand in. An auto turret wants a camera and a targeting computer together, which means counting computers before anyone is promised a turret: a camera without its partner just waits. A spare goes into a homing missile launcher when a heli keeps visiting, or into a PTZ camera over the front door.
The recycler is the poor end of the deal. The ordinary one returns about half of each material, a bit more on a lucky roll, and no bench of yours can put a camera back together. Break one down only when you hold more than your base will ever place.