One of the members recently reached out to be for advice on what electronics to use in the 4wd Truggy. He was looking for the cheapest solution. Here is the list I gave him. While some of these aren’t the absolutely the cheapest, they are they cheapest and adequate to do the job.
Here is the cheapest electronics I’d recommend:
Remote
http://www.hobbyking.com/hobbyking/store/__45311__HobbyKing_174_8482_HK_GT2B_3CH_2_4GHz_Transmitter_and_Receiver_w_Rechargable_Li_ion_Battery.html
Servo
http://hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=42524
ESC
http://hobbyking.com/hobbyking/store/_38706__HobbyKing_174_8482_X_Car_45A_Brushless_Car_ESC_sensored_sensorless_US_Warehouse.html
Motor
http://hobbyking.com/hobbyking/store/_42671__Turnigy_Trackstar_1_10_9T_4370KV_Brushless_US_Warehouse.html
Each of these can be purchased from their US warehouse. Let the page sit open for a minute and they’ll pop up with a lower price on most of them.