The only thing I'm likely to want to get at the airport when time is tight is food & beverage. And I'd certainly pay $1.50 to have that extra value meal hot and waiting for me at the connecting gate. But the challenge I see is the timing. If my inbound is delayed as little as 10 or 15 minutes, then the food is getting cold, and your delivery guy is wasting valuable time standing around waiting for me to arrive.