In the casework section drawing provided, the detail that likely does not align with the cost estimate is the note:

"PLASTIC LAMINATE COUNTERTOP AND BACKSPLASH"

This is often a higher-cost item compared to alternatives like post-formed countertops, solid surface over MDF, or budget composite finishes. If the project is under cost pressure, specifying both a plastic laminate countertop and a separate laminate backsplash can increase material and labor costs due to custom fabrication and edge treatments.