Posters, someone please help me out. I need to know if my site manager is duping me. The DPC for my 3 bedroom house plus the Boys Quarters cost me 1.3million in Abuja. Please advise me, is this cost outrageous? Currently, doing the blockwork for both buildings (Main house and BQ) is costing me around 900,000 up to the Lintel level. Is this cost realistic? or am I being duped? I was present when the DPC was cast so I ensured they used the correct mixture of cement. I have not been present for the blockwork because am away on business trip. Particularly, my site manager buys one trip (20 tons) of chippings(gravel) for 65,000 naira, is this realistic?
Thanks for any response you can give.

.