Rounded Vs Square Drywall Corners Cost . Load a staple gun with t50 staples and staple the vinyl into the drywall. The labor cost to hang and finish drywall is $1.00 to $2.70 per square foot. Drywall Corner Bead Nails Or S Nail Ftempo from nail.ftempo.com I think you'd be better off just choosing which appeals to you. The cost of drywall installation is between $1.30 to $2.02 per sq. Drywall corners, round vs square.