Write SQL query to solve given problem: What is the average supply cost for the part "hot spring dodger dim light"?. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT AVG(T1.ps_supplycost) FROM partsupp AS T1 INNER JOIN supplier AS T2 ON T1.ps_suppkey = T2.s_suppkey INNER JOIN part AS T3 ON T1.ps_partkey = T3.p_partkey WHERE T3.p_name = 'hot spring dodger dim light'