In my experience, cost is not related to materials and labor. For example, CROs know if they're likely the only company that can make a product and will charge accordingly. Often and to me sadly, a bidding processes is needed to determine market value of production. I've seen CROs instantly cut pricing in half if you present another option.

I would be cautious with chemical database (unsure which you are using) as there are companies that post chemicals as lead generation and cannot make them.

If you solve the selection of the best route, helping with sourcing the product may not be worth your resources. In other words, just that piece alone, if done well, is very valuable and hope the market sees it.