hi, is the A/C taxi widely available at Bangalore international airport? do i really need book a taxi in advance or I can just get one when I arrive? it seems there are two companies, Easy Cab and Meru, do they take credit card in the car or I have to pay in advance in the counter if I use credit card? If I pay in counter then it must be a fixed amount, is that usually higher than paying in the car? thank you!