My brain hurts. Been trying to think of the Pro that used to play these.
Henrik Stenson, 2013. Different look, of course. And iirc, a set like his went for around $3K. He was still using them in '23. Not made in U.S., nor available here at that time.

Depending on condition, you may be low on pricing.

Eguller I think his were like the pic I posted. There are a lot of sets like the ones in the OP, but people got the wrong idea and are all claiming them as being the same as Stenson's, thus priced outrageously. Callaway quit making them and he had to find a place in Europe that would make them for him.

This guy is thinking wrong also, imo.....
About the 8:50 mark.

brownmoose13 based on what WRX posted maybe I should raise the price!!!

Naaah, they give them away on fleabay.

they are graphite, regular flex...lower price here because of Ebay fees