White Elephant?
A white elephant is an idiom for a valuable but burdensome possession of which its owner cannot dispose and whose cost (particularly cost of upkeep) is out of proportion to its usefulness or worth.
-> 그것의 유용성에 걸맞지 않게 비싼 유지비용이
필요한 물건, 가치는 있지만 소유하기에 부담스러운 물건을 의미하는 관용구