Hi all, anyone has experience about how much it costs to repair or "change" roof for shoplot unit arounf 1400sf? (Due to water leakage)

Quotations I received:
1) RM6000 to change around 300 pieces of roof tiles.

2) RM15000 to change around 1400 pieces of entire roof tiles.

Repair works including checking, remove, dispose, replace and fixing broken spot with silicone.

Are these charges reasonable? Please advise, thank you.

Contractor told me:
300 pieces is expensive because of not gonna rent crane, so it's purely physical lift to third floor. (My unit ks 3 floors)

They did not mention abt the days, I guess not going to be short as this is most likely one man job as per advised by contractor.