It's just a guess, price-wise, I could be way out, but if you'd like to compare the price of stainless steel jewellery with Titanium jewellery, you'll get an indication.
Titanium is extremely expensive, mainly because of supply issues related to where the natural resources are. The machining of it is completely different to the machining of many other metals in terms of difficulty, speed and potential for damage and discolouration. I don't think Mark will really know how much they may be until he's actually pretty much finished production of the small quantity he has planned as it's impossible to know true costs on a project like this until it's complete and you know what issues and costs you had along the way.
Titanium is extremely expensive, mainly because of supply issues related to where the natural resources are. The machining of it is completely different to the machining of many other metals in terms of difficulty, speed and potential for damage and discolouration. I don't think Mark will really know how much they may be until he's actually pretty much finished production of the small quantity he has planned as it's impossible to know true costs on a project like this until it's complete and you know what issues and costs you had along the way.