KE30 and Cost Estimate

Dear CO Experts,

I have a question regarding value of material cost in KE30 and Cost estimate, is it always the same? because the value of material cost in CK40N doesnt reflect the value of material cost in KE30 Report, because currently my KE30 report of material cost is different with the material cost in CK40N, my company doesnt implement Material Ledger, and we use only CK40N to release the price monthly

Regards,

Angga