I booked a car at Economybookings with a pick up and drop off on different locations. A total price was shown which was decent.
Afterwards the car rental company (Firefly) charged my credit card with a way larger amount than the price at EconomyBookings. They charged me extra because of the different pick up and drop off location. Economybookings says that is correct and is in the Terms and Conditions.
Economybookings already knew in advance that pick up and drop off were different, but they did not show that in their total price.
Conclusion: do not believe the total price they offer. Eventually the costs can be much higher.