R-logic Technology Service P Ltd,kanoos Tower, Rd 39/1639, Kalathiparamba , Ernakulam,kerala, 682016 — Labour cost charged for new adapter purchased from customer care

Address: Ernakulam, Kerala, 682024

I have purchased a new adapter(20v 500w) for my LED 22 inch monitor(LS22B370).
They have billed for charger cost is rs1455 and additionally labercoast 458.
Is it required labour cost. I have purchased the adapter from R-LOGIC TECHNOLOGY SERVICE P LTD, KAnoos tower, RD 39/1639, Kalathiparamba,
ernakulam, Kerala, 682016
Invoice number: [protected]
Invoic date: 23/02/2016 TIN [protected]