example, headboard shackles (4000 lb working load)

steel - $20
Aluminum- $38
Titanium - $120
Carbon+ - $190

This does not really apply to cats but, it gives you relative prices.

I have used titanium on cats. I bought some and built some to replace aluminum and SS parts. The only place it showed a clear advantage over carbon or ss was sister clips or where it needed to act as a spring, it makes great sister clips.