BangGood recently put a lot of quadcopters, RC airplanes and parts needed for building your own quadcopters on sale.
Most of the discount offers including the RC car and boat models can be found here. It’s only up to you if you want a product that will fly, drive or float. There are cameras meant for racing drones on this website as well as FPV glasses. The camera Eken H9 can be bought at a discount price here where it’s possible to purchase the small drone Eachine H8C with a 2 Mpx camera too.