What he's saying Carp is; E-bay can/will not allow the sale of a fully functional fire arm,they have liability issues,,(it's in the fine print).
So what folks do is list their arm as described minus the trigger and nipple, and say: "This firearm is non functional as is,there is no trigger assembly or nipple". (ya gotta say that)
Then listed just below the firearm, missing the trigger assembly is;
Another listing for:, trigger that will fit--(name a bunch of tc arms)-- ,,(get it?)
Anybody that knows can find their own 1/4x28 nip.
Replacement triggers for the t/c are 40, set the price for the trigger at 35 and what ever ya want for minimum bid for the rifle sans trigger. I think lo9newolf is leading you right,,I'd bid myself but being a trad shooter the "stainless" just don't fit well,know what I mean? luck to ya.