They gave up quite a bit to get Harden though.
As part of a 4-team trade, traded by the Houston Rockets to the Brooklyn Nets; the Brooklyn Nets traded Jarrett Allen and Taurean Prince to the Cleveland Cavaliers; the Brooklyn Nets traded Rodions Kurucs, a 2021 1st round draft pick, a 2022 1st round draft pick (Tari Eason was later selected), a 2023 1st round draft pick, a 2024 1st round draft pick, a 2025 1st round draft pick, a 2026 1st round draft pick and a 2027 1st round draft pick to the Houston Rockets; the Brooklyn Nets traded Caris Levert to the Indiana Pacers; the Cleveland Cavaliers traded a 2024 2nd round draft pick to the Brooklyn Nets; the Cleveland Cavaliers traded Dante Exum and a 2022 1st round draft pick (MarJon Beauchamp was later selected) to the Houston Rockets; the Houston Rockets traded a 2023 2nd round draft pick to the Indiana Pacers; and the Indiana Pacers traded Victor Oladipo to the Houston Rockets. 2024 2nd-rd pick is CLE own 2021 1st-rd pick is a right to swap, did not convey 2023 1st-rd pick is a right to swap 2025 1st-rd pick is a right to swap 2027 1st-rd pick is a right to swap 2022 1st-rd draft pick is MIL own 2023 2nd-rd pick is HOU own