Average Hourly Cost: The average hourly cost for a marble countertop sealing job by a marble contractor is $50 - $75 per hour in 2023.

Cost Breakdown: The cost breakdown for a marble countertop sealing job by a marble contractor will include the cost of the sealant, the cost of any additional materials, the cost of any tools needed, and the cost of labor.

Factors Affecting Cost: Several factors can affect the cost of a marble countertop sealing job by a marble contractor. These include the type and quality of the sealant used, the complexity of the job, the location of the job, and the service provider.