What is the supply cost for the part "violet olive rose ivory sandy"?
supply cost refers to ps_supplycost; part "violet olive rose ivory sandy" refers to p_name = 'violet olive rose ivory sandy'
SELECT T2.ps_supplycost FROM part AS T1 INNER JOIN partsupp AS T2 ON T1.p_partkey = T2.ps_partkey WHERE T1.p_name = 'violet olive rose ivory sandy'