Hey! You should have the final 1.0 files available via both Backerkit and DriveThruRPG (check your email). You definitely don't need to buy it a second time!
Yes I do have them on Backerkit from an upload on Nov 30th 2022, and even though the file says Wrath of God 1e Digital, it downloads a zip that has the Wrath_of_God_1e_Color_v0.9 [WIP].pdf, instead of the one I see here being Wrath_of_God_1e_Color_v1.0.pdf, perfectly fine if the changes are not that significant though, just making sure before printing!