But... no!

Once I run out of CBills I can't add anything to the mech, I just want to see what the remaining options cost without having to open Excel and do it myself.
I looked at Smurfy and Li-Sang's tool but don't see where the cost of a Mech is listed.
I get the feeling the DEVs have never built a Mech without having access to 'all the CBills'.
Please tell me I'm an idiot and there is a way to do this...
Thanks for your help!
J--