so plastic Bone lacing is less invasive than Titanium Bonelacing ?
with a less invasive Dance
Medicineman
Never worked with titanium I take it

Best way to get new tools? Use your tools that are meant for metal on titanium...... you'll wreck your old tools FAST!!! (trust me, I made this $1600 mistake!)
Titanium is strong.... like SUPERMAN strong! And because of it's strength, ductility, and retentivity, it is used anywhere extreme stresses are found. However, BECAUSE of it's strength, ductility and retentivity, you need special tools to deal with it.... and my Industrial grade tools are NOT special enough (and they are designed to play in iron and steel for YEARS without wear).
So yes, getting titanium to bond to bones would be much more invasive then plastic (which I play with as well, and yes there are really strong plastics)
But on the whole, and a mechanical expression of ware, the general statement of " the higher the essence cost, the more valuable the ware" wouldn't be out of place. Just not the in game rationale as to why they cost more "humanity/soul/essence/spirit/ID/ego/fluffybunnies"