The jangki suseon chungdanggeum (long-term repair reserve) is legally the owner's cost, so tenants reclaim it on move-out. Applying the statutory formula, a 110 sq m unit runs 16,000-49,000 won a month, or 390,000-1,180,000 won over two years.
The jangi suseon chungdanggeum (long-term repair reserve) a tenant pays inside the monthly maintenance bill is refundable by the owner at move-out. Two years in a 112㎡ unit comes to between 546,000 and 1.69 million won, claimable for up to ten years.
Two line items on the management fee bill have entirely different natures. One is the owner's money paid by the tenant on their behalf — fully refundable at move-out. The other belongs to whoever is living there, with no refund. Here is the legal basis and settlement procedure.