ECX Torment 1/24 scale around 80.00 RTR and the 1/18 scale 100.00 RTR and you can get all the parts for them if it breaks,I got one for my 5 yr old and it still runs good, still hasn't broke anything after a year running
Hobbytown is a good choice,try to get a good battery im assuming they are 7.2 volts, I know one of them is a Tamiya Grasshopper.or Hornet. The other one looks to be mid engine 4 wheel steering,cant recognize it . I Haven't Played with Electrics in a really long time, But i can help you with...