Purchase returned to Australia in 2019 and signed with the
Melbourne Tigers of the
NBL1 for the
2019 season. He joined
Melbourne United of the
National Basketball League (NBL) as a development player for the
2019–20 season. On 2 March 2021, Purchase signed with the
Adelaide 36ers of the NBL as an injury replacement for
Isaac Humphries. He played four games in
NBL1 Central for the
North Adelaide Rockets in the
2021 season before he moved to the
Hobart Chargers of
NBL1 South. On 14 September 2021, Purchase signed a two-year deal with the
Perth Wildcats. The final year of his contract was declined by the team. On 7 February 2022, Purchase signed with the
Forestville Eagles of the
NBL1 Central for the
2022 season. Purchase returned to the Melbourne Tigers for the
2023 NBL1 South season. He was named
NBL1 South co-Most Valuable Player and earned All-Star Five honours. Purchase re-joined the Melbourne Tigers for the
2024 NBL1 South season. In 22 games, he averaged 15.95 points, 5.73 rebounds and 4.41 assists per game. Purchase joined the Hyderabad Falcons of the
Indian National Basketball League (INBL) for the 2025 season. His 172 points in the regular season led the league. He was subsequently named league MVP. Purchase re-joined the Melbourne Tigers for the
2025 NBL1 South season. On 4 May 2025, he set a new NBL1 scoring record with 55 points and 10 3-pointers in an 87–85 loss to the
Eltham Wildcats. He was named NBL1 South All Second Team. He helped the team reach the NBL1 South Grand Final, where they lost 99–80 to the
Sandringham Sabres, with Purchase scoring 20 points. On 7 August 2025, Purchase signed with the
Brisbane Bullets for the
2025–26 NBL season. He took the number 12 jersey, the same number his father Nigel wore in the last season of his 250-game career in 1993. He is set to re-join the Melbourne Tigers for the
2026 NBL1 South season. ==Personal life==