I was asked to deliver a cake and have no idea what to charge for delivery. I live in Brooklyn, work in midtown Manhattan, and it needs to be delivered to Columbia University on the upper west side (116th/Broadway). It could be roughly a $25 cab ride from midtown, and I can take a subway back to work, but I guess I should be figuring in time too. What do you think is fair?

you should charge for your drop off and back to work cab fair. (with all that peek time trafic in manhattan