How much to tip a airport drop off valet?

[jjjbennett]

I'm using Pacifico Airport Valet to shuttle my family and car from their lot to the terminal at PHL and then they take my car back to their secured lot?

I was wondering what you thought the appropriate tip was for the driver who drops me at the airport and takes my car back to the lot. Remeber he is not picking me up at home. I am picking up the driver at the Pacifio lot a few minutes from the airport.

I've not used this type of service before and wonder what I should tip?

 

[CarolA]

When I was in Nashville I used a service like that a few times. They usually helped with luggage so I tipped based on that $2 per bag or a minimum of $5. Of course being the NE maybe inflation makes them expect more???