You may be paying exorbitant rates or cheap amount to the moving company but this does not mean that you are excluded from paying tips to movers. Remember that the moving industry is a service industry and it is your responsibility to give out tips for the movers that helped you with it.
If you are pleased with the service of the movers, you can give tips as much as 20% or more. This is if the movers are god and is in compliant with your rules. This is outside of the food that you will serve if at lunchtime, they are still at your place.
If you are unsatisfied with their service, you can give the mover the obligatory 10% and food. Make it a point that you have food and refreshment ready that way the movers and the people involved in the move can go smoothly.