Small, and the most transparent operator on the airport run. Cheddi Jagan to Georgetown is 10,000 Guyana dollars on a weekday daytime, 12,000 at night between ten and six, 12,000 at weekends and 14,000 on weekend nights. Ogle to Georgetown is 3,000 on weekdays and 4,000 at weekends.
Set against the 10,000 or so you would negotiate at the airport rank, what you are buying is knowing the number before you land - which matters most at night, when the rank is where haggling goes worst.
Intercity runs to Linden, New Amsterdam and Berbice are quoted over WhatsApp. Toyota Axio fleet, around the clock. No address or email published, so the pin is central Georgetown.