Originally Posted by TWA Fan 1
Cheapest and easiest won't be the same, as noted in earlier posts.
I can't say with 100% certainty that it is possible to buy a MetroCard anywhere at LGA.
!
They are for sale at the Hudson News store in the food court near the AA ticket counter. THey are probably for sale at other Hudson News stores throughout the airport.
The Metro Cards are $10 for 6 rides compared with $2 if you pay for rides separately on the bus or subway. If the person is arriving in the am and leaving that same day, it will probably be useful (2 rides-bus then subway- to the interview, 2 rides back, 2 rides to be used during the middle of the day)