Waterbug, $1100 - $1400 is the range I've spent and been quoted in the past.
Material (cheap to exotic) and with or w/o battens and the Harken traveler will affect your final cost. Off season work can sometimes gain a few dollars of advantage.
I would still think a well designed pinhead would outperform a poorly designed ST.
I am curious if many of the sailmakers use software (if it exists) which can model mast, performance, fabric and wind characteristics into a cut pattern and then test the design in the real world? They would be worth a conversation.
Sail fast, Tom G