Most calls start with something already in the way. It might be a cracked or sinking piece of driveway that needs to come out without breaking the rest, a doorway going into a concrete wall, a trench for a drain line across the patio, or a hole for a pipe through the garage slab. The cut has to run straight and stop where it should, so the concrete around it stays sound.
The price moves with how thick the concrete is, how many feet we cut or holes we drill, how much steel is inside and how easy it is to get the saw to the spot. Indoor work, tight corners and hauling the pieces away add to it. After I measure, the written estimate gives you your own figure.
The schedule turns on two things. If anything could be buried in the slab, the spot gets checked before we cut, which can add a visit. If new concrete goes back into the opening, it has to cure, the wait while it hardens enough to take weight, so plan on staying off it for a while after the pour.