I don't believe you can "buy" your way into Heaven with works, but that the Grace of God is freely given and HE decides to whom.
I'll let Him decide what "works" He requires OR whether He requires them.
It would behoove those of the LDS persuasion to also let Him decide.
Neither I nor the Lord have talked about “buying” your way into heaven, but there are things discussed as qualifiers for those Heavenly blessings. Grace simply allows us to do those qualifying acts w/ efficacy. Without grace through the atonement, works wouldn't matter b/c we would all fall short.
BTW, apparently the Lord does require them as stated in the 2 scriptures I cited as well as many others I could cite. That is my conclusion. I'm still not sure what your conclusion is other than perhaps you don't know for sure. I can respect that.