As we are generally not talking about pricing on WPS I never researched this aspect. Google might have the answer π€·π»ββοΈ
As far as I know GS back in the day was primarily a JDM and Asia product - the first official sales in Europe came with the opening of the Paris boutique (please correct me if anyone knows better).
Am I a fan of the reissue? Very much so - love the idea of a thinner, hand wound hi beat watch and I feel they did a great job with it. If I was currently not on a small watch buying moratorium I would definitely have gone for one ππ»ππ»
As for Taro Tanaka, he was a Seiko product till retirement and while not limited to GS (he was instrumental in designing some very key Seikos, too) he did not - to my knowledge work for other brands or categories. He did restructure the Customer Service Department of Seiko after they closed down the internal design department in the 1970s. Once they realized their mistake and reopened it, he was already retired.
Hope this helps.