OnePlus India — Oneplus android tv 40 inches Y1 screen replacement cost more than my bought price

I purchased android tv of 40" inches at 18600 on 20 oct but its display was broken accidently. i called customer care for support but they ask 20000 for screen replacement of my tv how its possible that 18600 rs tv screen cost is 20000 and main thing same model 32 inch tv screen cost is 8000 and same model 43 inch screen cost is 14000 i had screenshots of them. i will agree to pay charges but between 8k to 12k