I feel like you shouldn’t sleep on Professor Hulk. This iteration of the hulk hasn’t been made in action figure form all that frequently. Only three times since 1997-present day. For plenty of Hulk fans who view Peter David’s seminal run as a litmus test for how this character should be portrayed in the comics, the Professor Hulk era was top tier. As if Marvel finally found their Goldilocks formula for the Hulk and is still highly praised. Because in that run we still saw the absolute savagery of the hulk whenever he wanted to throw hands and cut loose, but he still had the genius intellect of Bruce Banner and the book was still mired in the same kind of quirkiness that fans were used to in the She-Hulk book from a decade prior.
So bottom line is that it’s a popular design from an adored era and I’m sure hulk fans are going to be stumbling over them to grab this.